Optical receiver system

Abstract

The utility model provides an optical receiver system. An optical receiver system includes an optical circuit, which may include a phase shift device, a demultiplexer device, a power combiner device, and / or a power divider device. Different combinations of these devices within the optical circuit may balance and / or reduce photocurrent within the photodiode device to improve performance (e.g., bandwidth) of the optical receiver system relative to another optical receiver system that does not include the optical circuit.

Description

Technical Field

[0001] The utility model relates to an integrated circuit, and in particular to an optical receiver system. Background Art

[0002] An optical receiver system is a system that detects and converts optical signals into electrical signals and can include components such as two-dimensional grating couplers, photodiodes, and transimpedance amplifiers. Sometimes, an optical receiver system is part of an optical communication system (fiber optic communication system, optical wireless communication system, optical local area network system, or satellite communication system) and can perform functions related to receiving and converting transmitted optical data for further processing. Utility Model Content

[0003] The present invention provides an optical receiver system comprising a phase shifter, a power combiner, a power splitter, and a photodiode. The power combiner is coupled to the phase shifter, the power splitter is coupled to the power combiner, and the photodiode is coupled to the power splitter.

[0004] The present invention provides an optical receiver system, comprising a demultiplexer device, a phase shifter device, a power distributor device, and a photodiode device. The phase shifter device is coupled to the demultiplexer device. The photodiode device is coupled to the power distributor device.

[0005] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Various aspects of the present disclosure may be best understood from the following detailed description when read in conjunction with the accompanying drawings. It should be noted that, in accordance with standard industry practice, the various features are not drawn to scale. In fact, for clarity of discussion, the dimensions of the various features may be arbitrarily increased or decreased.

[0007] Figure 1 is a schematic diagram of an example high-speed optical receiver system described in this article.

[0008] Figures 2A-2C is a series of diagrams illustrating an embodiment of an example optical receiver system described herein.

[0009] Figure 3A and Figure 3B is a diagram related to an example of a phase shifting device described in this article.

[0010] Figures 4A-4Dis a series of diagrams relating to example components that may be included in the power combiner devices and / or power divider devices described herein.

[0011] Figure 5A and Figure 5B is a schematic diagram associated with an example demultiplexer device described herein.

[0012] Figures 6A-6B is a series of graphs that include examples of performance data associated with an optical receiver system and one or more components described herein.

[0013] Figure 7 is a diagram of example components of one or more devices that may be included as part of the high-speed optical receiver systems described herein.

[0014] Figure 8 is a flow chart of an example of a process performed by the optical receiver system described herein. DETAILED DESCRIPTION

[0015] The following disclosure provides many different embodiments or examples for implementing the different features of the provided subject matter. Specific examples of components and arrangements are described below to simplify the disclosure. These are merely examples and are not intended to be limiting. For example, forming a first feature on or above a second feature in the description below may include embodiments in which the first and second features are formed to be in direct contact, and may also include embodiments in which additional features may be formed between the first and second features so that the first and second features may not be in direct contact. In addition, the present disclosure may use repeated reference numerals and / or letters in various examples. This repetition is for the purpose of simplicity and clarity and does not, by itself, dictate the relationship between the various embodiments and / or arrangements discussed.

[0016] An optical receiver system may include a photodiode device and a two-dimensional grating coupler. In some cases, when incident light received at the input of the photodiode device is mismatched, the performance of the optical receiver system may be degraded. For example, the output of the two-dimensional grating coupler may include mismatched lightwaves (lightwaves with different amplitudes, different wavelengths, or asynchronous phases, etc.). The mismatched lightwaves may cause an imbalance and / or increase in photocurrent within the photodiode device, thereby causing a degradation in the performance (e.g., bandwidth) of the optical receiver system.

[0017] Some embodiments described herein provide an optical receiver system. The optical receiver system includes an optical circuit, which may include a phase shifter, a demultiplexer, a power bank combiner, and / or a power splitter. Different combinations of such devices within the optical circuit can balance and / or reduce photocurrent within a photodiode device to improve the performance (e.g., bandwidth) of the optical receiver system relative to another optical receiver system that does not include the optical circuit.

[0018] In this way, the optical receiver system can meet the performance threshold requirements of the high-performance optical communication system market while achieving improved manufacturing yields and reduced field failures. Improving manufacturing yields and reducing field failure rates can save manufacturing costs and reduce the amount of resources (e.g., raw materials, semiconductor manufacturing tools, labor, and / or computing resources) required to support high-performance optical communication market systems.

[0019] Figure 1 FIG2 is a diagram of an example optical receiver system 100 described herein. Optical receiver system 100 is configured to detect optical signals and convert them into electrical signals. Optical receiver system 100 may be included as part of an optical communication system (e.g., a fiber-optic communication system, an optical wireless communication system, an optical local area network system, or a satellite communication system) that performs functions associated with receiving and converting transmitted optical data for further processing.

[0020] Figure 1 The optical receiver system 100 includes a two-dimensional grating coupling device 102, an optical circuit 104, a photodiode device 106, and a transimpedance amplifier device 108. The two-dimensional grating coupling device 102, the optical circuit 104, and / or the photodiode device 106 may be coupled and / or connected using a device that can transmit light waves (e.g., a fiber optic cable, an optical connector, and / or a waveguide).

[0021] The two-dimensional grating coupling device 102 can receive light (e.g., electromagnetic waves) from an external optical medium (e.g., free space, a waveguide, or a fiber optic cable) via another device capable of transmitting light. In some embodiments, and based on the pattern formed on the surface of the two-dimensional grating coupling device 102, the two-dimensional grating coupling device 102 can output an incident light 110a (e.g., a first light wave) and an incident light 110b (e.g., a second light wave). In some embodiments, the incident light 110a and the incident light 110b are mismatched (e.g., have different amplitudes, different wavelengths, and / or asynchronous phases).

[0022] In some embodiments, the incident light 110a and / or the incident light 110b is a transverse electric (TE) mode output of the two-dimensional grating coupling device 102. In the TE mode, the direction of propagation of the incident light 110a and / or the incident light 110b is perpendicular to the electric field in the two-dimensional grating coupling device 102.

[0023] Alternatively, in some embodiments, the incident light 110a and / or the incident light 110b is a transverse magnetic (TM) mode output of the two-dimensional grating coupling device 102. In the TM mode, the direction of propagation of the incident light 110a and / or the incident light 110b is perpendicular to the magnetic field in the two-dimensional grating coupling device 102.

[0024] The optical circuit 104 may include one or more of a phase shift device, a power combiner device, a power divider device, and / or a demultiplexer device, which may receive the incident light 110a and 110b from the two-dimensional grating coupling device 102. The optical circuit 104 may convert the incident light 110a and 110b into optical signals 112a and 112b.

[0025] like Figure 1 As shown, in some embodiments, the photodiode device 106 receives optical signals 112a and 112b into corresponding waveguide structures 114a and 114b. The photodiode device 106 may include a photodiode region 116 (e.g., a region of semiconductor material sensitive to light waves, such as germanium) that converts the optical signals 112a and 112b into respective photocurrents 118a and 118b. Based on the photocurrents 118a and 118b, the photodiode device 106 may output currents 120a and 120b to the transimpedance amplifier device 108 via terminals 122a and 122b (e.g., positive and negative terminals, respectively).

[0026] The transimpedance amplifier device 108 converts the currents 120 a and 120 b into an output voltage 124 for use by an optical communication system including the optical receiver system 100. Fluctuations and / or variations in the currents 120 a and 120 b (e.g., due to imbalances and / or magnitudes of the photocurrents 118 a and 118 b caused by optical signal mismatches within the optical receiver system 100) may have various effects on the performance of the transimpedance amplifier device 108, including causing fluctuations and / or variations in the output voltage 124, distorting the output signal of the transimpedance amplifier device 108, and / or limiting the bandwidth performance of the transimpedance amplifier device 108. Additionally or alternatively, in other examples, fluctuations and / or deviations in the currents 120 a and 120 b may cause instability in a feedback device and / or control device included in the transimpedance amplifier device 108. Such effects may cause the performance of the optical receiver system 100 (e.g., speed or bandwidth in gigahertz (GHz)) to fail to meet performance thresholds for high-performance optical communication systems.

[0027] If combined Figures 2A-2C As described in greater detail elsewhere herein, the optical circuit 104 can include one or more of a demultiplexer device, a power combiner device, and / or a power divider device. Different combinations of such devices within the optical circuit 104 can balance and / or reduce the magnitude of the photocurrents 118 a and 118 b to improve the performance (e.g., bandwidth) of the optical receiver system 100 relative to another optical receiver system that does not include the optical circuit 104.

[0028] In addition, if combined Figures 2A-2CAs described elsewhere herein, an optical receiver system (e.g., optical receiver system 100) can perform a series of operations. The series of operations includes receiving a first incident light and a second incident light (e.g., incident light 110a and 110b) via an optical circuit (e.g., optical circuit 104) between a two-dimensional grating coupling device (e.g., two-dimensional grating coupling device 102) and a photodiode device (e.g., photodiode device 106). The series of operations includes converting the first incident light and the second incident light into respective time-fixed photocurrents (e.g., photocurrents 118a and 118b) via the optical circuit and the photodiode device. The series of operations includes providing a current (e.g., currents 120a and 120b) to a transimpedance amplifier (e.g., transimpedance amplifier device 108) based on the respective time-fixed photocurrents via the photodiode device. The series of operations includes converting the current into an output voltage (e.g., output voltage 124) used by the optical communication system via the transimpedance amplifier.

[0029] In this way, the optical receiver system can meet the performance threshold requirements of the high-performance optical communication system market while achieving improved manufacturing yields and reduced field failures. Improving manufacturing yields and reducing field failure rates can save manufacturing costs and reduce the amount of resources (e.g., raw materials, semiconductor manufacturing tools, labor, and / or computing resources) required to support high-performance optical communication market systems.

[0030] Figure 1 The number and arrangement of devices shown are provided as one or more examples. In practice, there may be Figure 1 Additional devices, fewer devices, different devices, or differently arranged devices than those shown in . In addition, Figure 1 Two or more of the devices shown may be implemented in a single device, or Figure 1 The single device shown may be implemented as a plurality of distributed devices. Additionally or alternatively, Figure 1 A set of devices (e.g., one or more devices) may perform the operations described as being performed by Figure 1 One or more functions performed by another set of devices.

[0031] Figures 2A-2C 2 is a series of diagrams 200 illustrating an example implementation of an optical receiver system described herein, such as optical receiver system 100. In example implementations, an optical circuit, such as optical circuit 104, may include one or more of a phase shifter device, a power combiner device, a power divider device, and / or a demultiplexer device.

[0032] Figure 2AThe example implementation includes an optical circuit 104a. The optical circuit 104a can be included in an optical receiver system 100a, wherein the optical receiver system 100a includes a single transimpedance amplifier (e.g., transimpedance amplifier device 108) that provides a single output voltage (e.g., output voltage 124). Figure 2A In some implementations, the incident light 110a and 110b comprises a light wave of a single wavelength.

[0033] like Figure 2A As shown, the optical circuit 104a includes phase shifting devices 202a and 202b. In some embodiments, as shown in FIG. Figure 2A As shown, the input phase shift devices 202a and 202b are connected to the output two-dimensional grating coupling device 102 respectively.

[0034] Each of the phase shifting devices 202a and 202b is a device that modifies the phase of the light wave passing through the phase shifter device. In other words, Figure 2A As shown, phase shifting devices 202a and 202b modify the relative timing or phase relationship between different optical signals received from the two-dimensional grating coupling device 102 (eg, incident light 110a and 110b).

[0035] Examples of phase shifting devices 202a and 202b include thermal phase shifting devices, electro-optical phase shifting devices, acousto-optical phase shifting devices, liquid crystal phase shifting devices, and / or waveguide-based phase shifter devices. The selection of the type of device used for phase shifting devices 202a and / or 202b may depend on the design requirements of the optical circuit 104a, such as the desired phase range, frequency or speed, power consumption, and / or integration compatibility with other devices included in the optical circuit 104a and / or the environment in which the optical receiver system 100a is used.

[0036] Further Figure 2A In the example embodiment shown in FIG. 1 , the optical circuit 104 a includes a power combiner device 204 . In some embodiments, as shown in FIG. Figure 2A As shown, the inputs of the power combiner device 204 are connected to the outputs of respective phase shifting devices 202a and 202b.

[0037] The power combiner device 204 is a device that combines the optical signals into a single output. Figure 2A As shown, the power combiner device 204 combines the optical signals 208 a and 208 b (eg, the optical signal output by the phase shift device 202 a ) into a single optical signal 210 .

[0038] Examples of the power combiner device 204 include an optical fiber-based power combiner device, a coherent power combiner device, a free-space power combiner device, and / or a waveguide-based power combiner device. The type of device selected for the power combiner device 204 may depend on the design requirements of the optical circuit 104a, such as the power level of the input signal, the desired efficiency, the wavelength range, and / or integration compatibility with other devices included in the optical circuit 104a, and / or the environment in which the optical receiver system 100a is used.

[0039] Further Figure 2A In the example embodiment shown in FIG. 1 , the optical circuit 104a includes a power divider device 206. In some embodiments, as shown in FIG. Figure 2A As shown, the input of the power divider device 206 is connected to the output of the power combiner device 204 .

[0040] The power divider device 206 (sometimes referred to as a beam splitter device or optical splitter device) is a device that divides an optical signal into multiple output signals with reduced power. In other words, Figure 2A As shown, power splitter device 206 splits optical signal 210 into optical signals 112a and 112b.

[0041] Examples of power divider device 206 include fiber-based power divider devices, planar lightwave circuit power divider devices, free space power divider devices, and / or waveguide-based power divider devices. The selection of the device type of power divider device 206 can depend on the design requirements of optical circuit 104a, such as the desired split ratio, wavelength range, power level, and / or integration compatibility with other devices included in optical circuit 104a, and / or the environment in which the optical receiver system 100a is used. In addition, in certain embodiments, power divider device 206 has a controllable split ratio (e.g., an adjustable split ratio) or a fixed split ratio.

[0042] In some embodiments, Figure 2A The phase shift devices 202a and 202b, the power combiner device 204, and the power divider device 206 are combined on a single semiconductor chip. Alternatively, in some embodiments, the phase shift devices 202a and 202b, the power combiner device 204, and / or the power divider device 206 are distributed across at least two semiconductor dies.

[0043] If combined Figure 1 、 Figure 2AAs described elsewhere herein, an optical receiver system (e.g., optical receiver system 100) includes a phase shifting device (e.g., phase shifting device 202). The optical receiver system includes a power combiner device (e.g., power combiner device 204) coupled to the phase shifter device. The optical receiver system includes a power splitter device (e.g., power splitter device 206) coupled to the power combiner device. The optical receiver system includes a photodiode device (e.g., photodiode device 106) coupled to the power splitter device.

[0044] Figure 2B The example embodiment includes an optical circuit 104b. The optical circuit 104b can be included in an optical receiver system 100b, wherein the optical receiver system 100b includes a plurality of transimpedance amplifiers (e.g., transimpedance amplifiers 108a-108n / 2) that provide a plurality of output voltages (e.g., output voltages 124a-124n / 2) to components of a high-performance optical communication system. Figure 2B In some embodiments, the incident light 110a and 110b may include light waves of multiple wavelengths.

[0045] like Figure 2B As shown, optical circuit 104b includes demultiplexer devices 212a and 212b. In some embodiments, as shown in FIG. Figure 2B As shown, the inputs of the demultiplexer devices 212a and 212b are connected to the respective outputs of the two-dimensional grating coupling device 102. Figure 2B In some embodiments, the incident light 110a and 110b includes multiple wavelengths.

[0046] Each demultiplexer device 212a and 212b is a device that separates a multiplexed optical signal carrying multiple wavelengths of light into individual optical signals carrying individual wavelengths of light. Figure 2B As shown, demultiplexer devices 212a and 212b separate the incident light 110a and 110b into optical signals 214a. a -214n b (For example, carrying each individual wavelength λ a -λ n light signal of the light wave).

[0047] Examples of demultiplexer devices 212a and 212b include fiber-optic demultiplexer devices, planar lightwave circuit demultiplexer devices, free-space demultiplexer devices, and / or prism-based demultiplexer devices. The type of device selected for demultiplexer devices 212a and 212b may depend on the design requirements of optical circuit 104b, such as the number of channels, wavelength range, channel spacing, and / or compatibility with other devices included in optical circuit 104a, and / or the environment in which optical receiver system 100b is used. In addition, in some embodiments, power divider device 206 has a controllable split ratio or a fixed split ratio.

[0048] Further Figure 2B As shown in the example embodiment, the optical circuit 104b includes phase shifting devices 202a-202n. In some embodiments, in combination with Figure 2B In contrast to the described optical circuit 104a, Figure 2B The inputs of the phase shifting devices (eg, phase shifting devices 202a and 202b) are connected to respective outputs of the two-dimensional grating coupling device 102, and the inputs of the phase shifting devices 202a-202n are connected to respective outputs of the demultiplexer devices 212a and 212b.

[0049] Further Figure 2B In the example embodiment shown, the optical circuit 104b includes power combiner devices 204a-204n / 2. In some embodiments, as Figure 2B As shown, the inputs of the power combiner devices 204a-204n / 2 are connected to the outputs of the respective phase shift devices 202a-202n.

[0050] Further Figure 2B In the example embodiment shown, the optical circuit 104b includes power divider devices 206a-206n / 2. In some embodiments, as Figure 2B As shown, the inputs of the power divider devices 206a-206n / 2 are connected to the outputs of the respective power combiner devices 204a-204n / 2.

[0051] Figure 2C The example embodiment includes an optical circuit 104c. The optical circuit 104c can be included in an optical receiver system 100c, which includes a plurality of transimpedance amplifiers (e.g., transimpedance amplifiers 108a-108n) that provide a plurality of output voltages (e.g., output voltages 124a-124n). Figure 2A The described optical circuit 104a and the combination Figure 2B Compared to the described optical circuit 104b, Figure 2CIn FIG. 1 , the optical circuit 104 c does not include a power combiner device (eg, the power combiner device 204 and / or the power combiner devices 204 a - 204 n / 2 ). Figure 2C In some embodiments, the incident light 110a and 110b may include light waves of multiple wavelengths.

[0052] like Figure 2C As shown, the optical circuit 104c includes a demultiplexer device 212. In some embodiments, Figure 2B Optical circuit 104b, on the contrary, Figure 2B The inputs of the demultiplexer devices 212a and 212b are connected to the respective outputs of the two-dimensional grating coupling device 102, Figure 2C The inputs of the demultiplexer means 212 are connected to respective outputs of the phase shifting means 202a and 202b.

[0053] Further Figure 2C As shown, the optical circuit 104c includes power splitter devices 206a-206n. In some embodiments, Figure 2B Optical circuit 104b, on the contrary, Figure 2B The inputs of the power divider devices (e.g., power divider devices 206a-206n / 2) are connected to the outputs of the power combiner devices (e.g., power combiner devices 204a-204n / 2), Figure 2C The inputs of the power divider devices 206a-206n are connected to the respective outputs of the demultiplexer device 212.

[0054] In some embodiments, Figure 2B and 2C The phase shift device 202, the power divider device 206 and the demultiplexer device 212 and Figure 2A and 2B The power combiner device 204 is located on a single semiconductor die. Alternatively, in some embodiments, Figure 2B and 2C Phase shifting means 202, power divider means 206 and demultiplexer means 212, and / or Figure 2A and 2B The power combiner devices 204 are distributed across at least two semiconductor dies.

[0055] If combined Figure 1 、 Figure 2B 、 Figure 2CAs described elsewhere herein, an optical receiver system (e.g., optical receiver system 100) includes a demultiplexer device (e.g., demultiplexer device 212). The optical receiver system includes a phase shift device (e.g., phase shift device 202) coupled to the demultiplexer device. The optical receiver system includes a power splitter device (e.g., power splitter device 206). The optical receiver system includes a photodiode device (e.g., photodiode device 106) coupled to the power splitter device.

[0056] Figures 2A-2C The number and arrangement of devices shown are provided as one or more examples. Figures 2A-2C There may be additional devices, fewer devices, different devices, or differently arranged devices than shown. Additionally or alternatively, Figures 2A-2C A set of devices (eg, one or more devices) may be implemented to perform Figures 2A-2C Another set of means for implementing the example described herein performs one or more functions.

[0057] Figure 3A and Figure 3B is a diagram 300 associated with an example phase shifting device (e.g., phase shifting device 202) described herein. Figure 3A and Figure 3B The diagram 300 relates to a thermal phase shifter type device.

[0058] like Figure 3A As shown, the phase shift device 202 may include an input 302a and an output 302b. The input 302a and the output 302b may be connected through a waveguide structure 304. In some embodiments, the waveguide structure 304 includes a material having a high thermo-optical coefficient, such as silicon. Figure 3B As described, and in some embodiments, a thermally induced phase change, free carrier injection process is used to change the refractive index of the waveguide structure 304, thereby precisely controlling the phase of an optical signal (eg, light wave) transmitted through the waveguide structure 304. In other words, Figure 3A The phase shifting device 202 may be used to synchronize incident light waves (eg, incident light waves 110a and 110b).

[0059] Figure 3B An integrated circuit 306 is shown that may be included in the phase shift device 202 (eg, as part of the waveguide structure 304 ). The integrated circuit 306 includes an intrinsic hot carrier injection region 308 , a p-type region 310 , and an n-type region 312 .

[0060] The intrinsic hot carrier injection region 308 may be a region within the integrated circuit 306 where carriers (e.g., electrons or electron holes) gain kinetic energy through impact ionization or tunneling. The p-type region 310 may be a region within the integrated circuit 306 that includes p-type dopants (e.g., approximately 4x10 per cubic centimeter). 17 In the p-type region 310, most of the carriers may be holes. The n-type region 312 may be another region within the integrated circuit that includes n-type dopants (for example, approximately 3x10 per cubic centimeter). 17 In the n-type region 312 , most of the carriers may be electrons.

[0061] The current multilayer photodiode device 314 can be applied to an integrated circuit 306. In this case, carriers in the intrinsic hot carrier injection region 308 can obtain sufficient kinetic energy to increase the temperature of the integrated circuit 306 (e.g., increase the temperature of the waveguide structure 304). Increasing the temperature of the waveguide structure 304 can change the refractive index of the waveguide structure 304, thereby precisely controlling the phase of an optical signal (e.g., a light wave) transmitted through the waveguide structure.

[0062] As mentioned above, providing Figure 3A and Figure 3B As an example. Other examples (e.g., components and / or mechanisms used in the phase shifting device 202) may be similar to those described with respect to Figure 3A and 3B Different than described.

[0063] Figures 4A-4D 4 is a series of diagrams 400 relating to example components that may be included in the power combiner device and / or the power divider device described herein. These components may be included in the power combiner device 204 and / or the power divider device 206 of the optical circuit 104.

[0064] Figure 4A 2 shows an example embodiment of a multi-mode interference (MMI) device 402 that may be included in the power combiner device 204. Figure 4A As shown, the MMI device 402 is configured as a 1×2 multi-mode jammer (eg, the MMI device 402 includes a single input port and two output ports).

[0065] In some embodiments, MMI device 402 includes a waveguide-based structure that utilizes the principle of multimode interference to achieve its function. MMI device 402 may include a multimode waveguide segment (e.g., a waveguide formed on a substrate of semiconductor material) that splits or combines an input optical signal into two (or more) output optical signals according to a specific arrangement.

[0066] Figure 4B An embodiment is shown of an example of a Y-connection device 404 that may be included in the power combiner device 204. The Y-connection device 404 (eg, a y-branch splitter device) may split an input optical signal into two (or more) output optical signals according to a particular arrangement.

[0067] In some embodiments, the Y-connection device 404 includes a waveguide-based structure on a substrate. The Y-connection device 404 can include a single input waveguide that is divided into multiple output waveguides in a Y-shaped arrangement. The Y-connection structure can effectively distribute the input optical signal between two (or more) output paths.

[0068] Figure 4C An embodiment of an example of a directional coupler arrangement 406 that may be included in the power splitter arrangement 206 is shown. The directional coupler arrangement 406 may function using the principle of evanescent field coupling.

[0069] In some embodiments, the directional coupler device 406 includes a waveguide for splitting or combining optical signals. In some embodiments, the directional coupler device 406 includes an optical fiber for splitting or combining optical signals.

[0070] By way of example, within the directional coupler device 406, two waveguides or two optical fibers can be in close proximity, thereby allowing for evanescent coupling of energy (e.g., light waves) within the directional coupler device 406. For example, an optical signal can enter the input port of the directional coupler device 406 and be split into two paths (e.g., a first path associated with the input port of the directional coupler device 406 and a second, adjacent path associated with the output port of the directional coupler device 406). Energy can be transferred within the coupling region of the directional coupler device 406 (e.g., along the adjacent waveguides or optical fibers included in the first and second paths).

[0071] Figure 4D 1 shows an example embodiment of an MMI device 408 that may be included in the power divider device 206. Figure 4D As shown, MMI device 408 is arranged as a 2x2 device (eg, MMI device 408 includes two input ports and two output ports). MMI devices 408a-408c illustrate different example implementations of input ports, output ports, and waveguide structures that may be included in MMI device 408.

[0072] For example, the two input ports of MMI device 408a are separated horizontally and connected to a first waveguide structure. MMI device 408a also includes a second waveguide structure adjacent to and connected to the first waveguide structure. Furthermore, the two output ports of MMI device 408a are separated horizontally and connected to the second waveguide structure.

[0073] As another example, the two input ports of MMI device 408b are horizontally connected and connected to a first waveguide structure. MMI device 408b also includes a second waveguide structure adjacent to and connected to the first waveguide structure, a third waveguide structure adjacent to and connected to the second waveguide structure, and a fourth waveguide structure adjacent to and connected to the third waveguide structure. Furthermore, the two output ports of MMI device 408b are horizontally joined and connected to the fourth waveguide structure.

[0074] As another example, two input ports of MMI device 408c are horizontally connected and connected to a first waveguide structure. MMI device 408c also includes a second waveguide structure adjacent to and connected to the first waveguide structure. Furthermore, two output ports of MMI device 408c are horizontally connected and connected to the second waveguide structure.

[0075] As mentioned above, Figures 4A-4D Other examples (e.g., components and / or arrangements of components that may be included in the power combiner device 204 and / or the power divider device 206) may be provided as one or more examples. Figures 4A-4D Different than described.

[0076] Figure 5A and 5B 5 is an example of an embodiment of a demultiplexer device as described herein. The demultiplexer device in embodiment 500 may correspond to the demultiplexer device 212 in the optical circuit 104.

[0077] like Figure 5A As shown, the demultiplexer device 212 includes an input 502. The input 502 may be configured to receive light having a combination of wavelengths (eg, light having a wavelength λ a The light has a wavelength λ b The demultiplexer device 212 further comprises an output 504a arranged to output an optical signal having a wavelength λa and an output 504b arranged to output an optical signal having a wavelength λa. b The optical signal is output 504b.

[0078] Figure 5B An example functional block diagram 506 of the demultiplexer device 212 is shown. Figure 5B As shown, functional block diagram 506 includes a combination of MMI devices 508a-508g. In some embodiments, the arrangement of MMI devices 508a-508g in functional block diagram 506 is referred to as a 2x2 MMI stacked optical circuit.

[0079] In some embodiments, each MMI device 508a-508g includes a power splitter device (e.g., in combination with Figures 4A-4DIn one embodiment, the power divider device 206 of the MMI devices 508a-508g may have a different, respective power divider ratio. In other such embodiments, one or more power divider devices in the MMI devices 508a-508g may have a different, respective power divider ratio than one or more other power divider devices in the MMI devices 508a-508g.

[0080] In some embodiments, the output of one or more of the MMI devices 508a-508g may correspond to different degrees of insertion loss associated with each of the MMI devices 508a-508g (e.g., different degrees of insertion loss in decibels (dB)). For example, the output of the MMI device 508a may correspond to the approximate insertion loss 510a associated with the MMI device 508a, the output of the MMI device 508b may correspond to the approximate insertion loss 510b associated with the MMI device 508b, the output of the MMI device 508d may correspond to the approximate insertion loss 510d associated with the MMI device 508d, and the output of the MMI device 508e may correspond to the insertion loss 510e associated with the MMI device 508e.

[0081] Insertion loss 510a, 510b, 510d, and / or 510e may represent a power difference between input and output signals of MMI devices 508a, 508b, 508d, and / or 508e. The power difference between input and output signals of MMI devices 508a, 508b, 508d, and / or 508e may be due to optical power loss or attenuation caused by various factors, including power split ratios, imperfections, scattering, reflection, or absorption associated with MMI devices 508a, 508b, 508d, and / or 508e.

[0082] As mentioned above, providing Figure 5A and Figure 5B As an example. Other examples (e.g., components and / or arrangements of components that may be included in the demultiplexer device 212) may be similar to those described with respect to Figure 5A and 5B Different than described.

[0083] Figures 6A-6B is a series of graphs 600 including example performance data associated with the optical receiver system and one or more components described herein. Example Performance Data Summary and Combination Figure 1 and Figures 2A-2C The performance data related to the optical receiver system 100 described in conjunction with Figure 4C The directional coupler device 406 described, combined with Figure 4D The MMI device 408 described, and the combination Figures 2A-2C , 5A and 5B described demultiplexer device 212.

[0084] Figure 6A An example relationship of an optical receiver system speed 602 (eg, the speed of the optical receiver system 100 in GHz) and a received signal strength indicator (RSSI) 604 of one or more integrated circuit dies 606a-606d is shown. Figure 6A , the integrated circuit die 606a may correspond to an integrated circuit die including a photodiode structure (e.g., the photodiode structure 106), and the RSSI 604 may correspond to an electrical output from the photodiode structure to the transimpedance amplifier (e.g., the output current 120a and / or 120b in microamperes (μA) from the photodiode device 106 to the transimpedance amplifier device 108). Figure 6A Performance data is reflected where the optical receiver system includes optical circuitry (eg, optical circuit 104 ) that processes an optical signal that may have an intensity of approximately 3 dB.

[0085] If combined Figure 1-5B As described, the arrangement of the optical circuit and / or photodiode can provide a time-fixed current to the transimpedance amplifier device. For example, the arrangement of the optical circuit can split the power (e.g., current) from the photodiode to a time-fixed current 608 of approximately 400 μA at an approximately 1:1 ratio (e.g., balancing currents 120 a and 120 b at approximately 50% each) and operate the optical receiver system at a fixed speed 610 of approximately 60 GHz. However, other values and ranges for the time-fixed current 608 from the photodiode and / or the fixed speed 610 of the optical receiver system are also within the scope of the present disclosure.

[0086] Table 1 shows an example relationship between wavelength and coupling ratio for a directional coupling device (eg, directional coupler device 406). As shown in Table 1, the coupling ratio is quantified based on the median and standard deviation of three example wavelengths (eg, λ1, λ2, and λ3).

[0087] Table 1

[0088]

[0089] The directional coupler device 406 of Table 1 may have a power distribution ratio (eg, coupling ratio) of approximately 1:1 (eg, approximately 50%). As shown in Table 1, for three wavelengths λ a ,λ b and λ cIn some embodiments, the power split ratio within an optical circuit (e.g., optical circuit 104) is controlled (e.g., tuned) by pairing the directional coupler device 406 with one of the wavelengths λ1, λ2, and λ3.

[0090] Table 2 shows an example relationship between wavelength and coupling ratio for MMI devices (eg, MMI devices 408a-408c). As shown in Table 2, the coupling ratio is quantified based on the median and standard deviation of three example wavelengths (eg, λ1, λ2, and λ3).

[0091] Table 2

[0092]

[0093] The MMI devices 408a-408c of Table 2 can be arranged to have various coupling ratios. As shown in Table 2, the coupling ratio, median, and standard deviation can vary for each of the three wavelengths λ1, λ2, and λ3. In some embodiments, the power split ratio within an optical circuit (e.g., optical circuit 104) can be controlled (e.g., tuned) by matching one of the MMI devices 408a-408c having a selected power split ratio to one of the wavelengths λ1, λ2, and λ3.

[0094] Figure 6B Example simulation data illustrating an embodiment of a demultiplexer device (e.g., in conjunction with Figure 5B The described embodiment of the demultiplexer device 212 includes a functional block diagram 506).

[0095] Figure 6B The simulated data includes an example relationship between a wavelength 618 (e.g., a wavelength in nanometers) of an optical signal within a demultiplexer device and a magnitude (e.g., a magnitude in decibels (dB)) of an insertion loss 620 of an MMI device (e.g., one or more of the MMI devices 508a, 508b, 508d, and / or 508e).

[0096] exist Figure 6B In FIG, data 622a may correspond to the output of MMI device 508d (eg, insertion loss 510d of optical signals of different wavelengths transmitted through MMI device 508d). Figure 6B In FIG. 5 , data 622 b may correspond to the output of the MMI device 508 e (eg, the insertion loss 510 e of optical signals of different wavelengths transmitted through the MMI device 508 e ).

[0097] like Figure 6BAs shown, embodiments of a demultiplexer device may include minimum total insertion loss at repeating (eg, periodic) wavelength intervals (eg, as highlighted by crossover points 624a-624c).

[0098] As mentioned above, Figures 6A-6B are provided as one or more examples. Other examples (e.g., performance data that may be associated with one or more components in the optical circuit 104) may be related to Figures 6A-6B Different than described.

[0099] Figure 7 is a diagram of an example apparatus 700 that can be included as part of an optical receiver system described herein (e.g., optical receiver system 100), including a two-dimensional grating coupling device (e.g., two-dimensional grating coupler device 102), an optical circuit (e.g., optical circuit 104), and a photodiode device (e.g., photodiode device 106). In some embodiments, apparatus 700 is included as part of an apparatus or group of apparatuses included in or separate from the optical circuit, including a phase shifting device (e.g., phase shifting device 202), a power combiner device (e.g., power combiner device 204), a power splitter device (e.g., power splitter device 206), and / or a demultiplexer device (e.g., demultiplexer device 212). Figure 7 As shown, apparatus 700 may include a bus 710 , a processor 720 , a memory 730 , an input component 740 , an output component 750 , and / or a communication component 760 .

[0100] The bus 710 may include one or more components that enable wired and / or wireless communication between components of the device 700. The bus 710 may include: Figure 7 The two or more components of the bus 710 are coupled together, for example, via operational coupling, communication coupling, electronic coupling and / or electrical coupling. For example, the bus 710 may include electrical connections (e.g., metal lines, traces and / or leads) and / or wireless buses. The processor 720 may include a central processing unit, a graphics processing unit, a microprocessor, a controller, a microcontroller, a digital signal processor, a field programmable gate array, an application specific integrated circuit and / or other types of processing components. The processor 720 may be implemented with hardware, firmware, or a combination of hardware and software. In some embodiments, the processor 720 may include one or more processors that can be programmed to perform one or more operations or processes described elsewhere herein.

[0101] Memory 730 may include volatile and / or non-volatile memory. For example, memory 730 may include random access memory (RAM), read-only memory (ROM), a hard disk, and / or other types of memory (e.g., flash memory, magnetic memory, and / or optical memory). Memory 730 may include internal memory (e.g., RAM, ROM, or a hard disk) and / or removable memory (e.g., removable via a universal serial bus connection). Memory 730 may be a non-transitory computer-readable medium. Memory 730 may store information related to the operation or device 700, one or more instructions, and / or software (e.g., one or more software applications). In some embodiments, memory 730 may include one or more memories coupled (e.g., communicatively coupled) to one or more processors (e.g., processor 720), such as via bus 710. The communicative coupling between processor 720 and memory 730 may enable processor 720 to read and / or process information stored in memory 730 and / or store information in memory 730.

[0102] Input components 740 can enable device 700 to receive input, such as user input and / or sensory input. For example, input components 740 can include a touch screen, a keyboard, a keypad, a mouse, buttons, a microphone, a switch, a sensor, a GPS sensor, a GNSS sensor, an accelerometer, a gyroscope, and / or an actuator. Output components 750 can enable device 700 to provide output, such as via a display, a speaker, and / or a light-emitting diode. Communication components 760 can enable device 700 to communicate with other devices via wired and / or wireless connections. For example, communication components 760 can include a receiver, a transmitter, a transceiver, a modem, a network adapter, and / or an antenna.

[0103] The device 700 can perform one or more operations or processes described herein. For example, a non-transitory computer-readable medium (e.g., memory 730) can store a set of instructions (e.g., one or more instructions or program codes) for execution by the processor 720. The processor 720 can execute a set of instructions to perform one or more operations or processes described herein. In some embodiments, execution of a set of instructions by one or more processors 720 causes one or more processors 720 and / or the device 700 to perform one or more operations or processes described herein. In some embodiments, hard-wired circuits can be used to replace instructions or to perform one or more operations or processes described herein in combination with instructions. Additionally or alternatively, the processor 720 can be configured to perform one or more operations or processes described herein. Therefore, the implementation described herein is not limited to any particular combination of hardware circuits and software.

[0104] Figure 7The number and arrangement of components shown are provided as examples. The apparatus 700 may include Figure 7 , fewer components, different components, or differently arranged components as shown in . Additionally or alternatively, one set of components (e.g., one or more components) in device 700 may perform one or more functions described as being performed by another set of components in device 700.

[0105] Figure 8 is a flow chart of an example process performed by an optical receiver system (e.g., optical receiver system 100) described herein. In some embodiments, Figure 8 One or more processing blocks of the optical receiver system are performed by another device or group of devices separate from or included in the optical receiver system, such as a two-dimensional grating coupling device (e.g., two-dimensional grating coupling device 102), an optical circuit (e.g., optical circuit 104), and / or a photodiode device (e.g., photodiode device 106). In some embodiments or Figure 8 The plurality of processing blocks of the optical circuit are performed by another device or a group of devices separate from or included in the optical circuit, including one or more of a phase shift device (e.g., phase shift device 202), a power combiner device (e.g., power combiner device 204), a power splitter device (e.g., power splitter device 206), and / or a demultiplexer device (e.g., demultiplexer device 212). Additionally or alternatively, Figure 8 One or more processing blocks may be performed by one or more components in the apparatus 700 , such as the processor 720 , the memory 730 , the input component 740 , the output component 750 , and / or the communication component 760 .

[0106] like Figure 8 As shown, the process 800 may include receiving a first incident light and a second incident light (block 810). For example, an optical circuit (e.g., optical circuit 104) between a two-dimensional grating coupler (e.g., two-dimensional grating coupling device 102) and a photodiode device (e.g., photodiode device 106) may receive the first incident light (e.g., incident light 110a) and the second incident light (e.g., incident light 110b), as described above.

[0107] like Figure 8 As further shown, process 800 may include converting the first incident light and the second incident light into respective time-fixed photocurrents (block 820). For example, as described above, the optical circuit and photodiode arrangement may convert the first incident light and the second incident light into corresponding time-fixed photocurrents (e.g., photocurrents 118a and 118b).

[0108] like Figure 8As further shown, process 800 may include providing currents based on respective time-fixed photocurrents (block 830). For example, as described above, the photodiode devices may provide currents (e.g., currents 120a and 120b) to transimpedance amplifiers (e.g., transimpedance amplifier device 108) based on respective time-fixed photocurrents.

[0109] like Figure 8 As further shown, process 800 can include converting the current into an output voltage for use by the optical communication system (block 840). For example, as described above, a transimpedance amplifier can convert the current into an output voltage (eg, output voltage 124) for use by the optical communication system.

[0110] Process 800 may include additional implementations, such as any single implementation or any combination of implementations described below and / or in combination with one or more other processes described elsewhere herein.

[0111] In the first embodiment, as combined Figure 2A As described, the first incident light and the second incident light include light waves of a single wavelength, and the first incident light and the second incident light are converted into respective time-fixed photocurrents, including transmitting the first incident light and the second incident light through respective phase shifting devices (e.g., phase shifting device 202a), transmitting the outputs from each phase shifting device (e.g., optical signals 208a and 208b) through a power combiner device (e.g., power combiner device 204), and transmitting the output from the power combiner device (e.g., optical signal 210) through a power divider device having a controllable power division ratio (e.g., power divider device 206).

[0112] In the second embodiment, alone or in combination with the first embodiment, and as in combination Figure 2B As described, the first incident light and the second incident light include light waves of multiple wavelengths, and converting the first incident light and the second incident light into respective time-fixed photocurrents includes transmitting the first incident light through a first demultiplexer device (e.g., demultiplexer device 212a), transmitting the second incident light through a second demultiplexer device (e.g., demultiplexer device 212b), transmitting the outputs of the same wavelength (e.g., wavelength λ) from the first demultiplexer device and the second demultiplexer device through respective phase shifting devices (e.g., phase shifting devices 202a and 202b), and transmitting the outputs of the same wavelength (e.g., wavelength λ) from the first demultiplexer device and the second demultiplexer device through respective phase shifting devices (e.g., phase shifting devices 202a and 202b). a The optical signal 214a a and 214a b), transmits the outputs from each phase shift device (e.g., optical signals 208a and 208b) through a power combiner device (e.g., power combiner device 204a), and transmits the output from the power combiner device (e.g., optical signal 210a) through a power divider device (e.g., power divider device 206a) having a controllable power division ratio.

[0113] In the third embodiment, alone or in combination with one or more of the first and second embodiments and as combined Figure 2C As described, the first incident light and the second incident light include light waves of multiple wavelengths, and converting the first incident light and the second incident light into respective time-fixed photocurrents includes transmitting the first incident light and the second incident light through respective phase shifting devices (e.g., phase shifting devices 202a and 202b), transmitting the outputs from the respective phase shifting devices (e.g., optical signals 208a and 208b) to a demultiplexer device (e.g., demultiplexer device 212), transmitting the output of the first wavelength (e.g., wavelength λ) from the demultiplexer device through a first power splitter device (e.g., power splitter device 206a) having a first controllable power splitting ratio. a The optical signal 214a of the demultiplexer device is transmitted through a second power divider device (eg, power divider device 206b) having a second controllable power division ratio. b optical signal 214b).

[0114] although Figure 8 Example blocks of process 800 are shown, but in some implementations, process 800 may include blocks related to Figure 8 800. Additionally or alternatively, two or more blocks in process 800 may be executed in parallel.

[0115] Some embodiments described herein provide an optical receiver system. The optical receiver system includes an optical circuit, which may include a phase shifter, a demultiplexer, a power combiner, and / or a power divider. Different combinations of these devices within the optical circuit can balance and / or reduce photocurrent within a photodiode device to improve the performance (e.g., bandwidth) of the optical receiver system relative to another optical receiver system that does not include the optical circuit.

[0116] In this way, the optical receiver system can meet the performance threshold requirements of the high-performance optical communication system market while achieving improved manufacturing yields and reduced field failures. Improving manufacturing yields and reducing field failures can save manufacturing costs and reduce the amount of resources (e.g., raw materials, semiconductor manufacturing tools, labor, and / or computing resources) required to support high-performance optical communication market systems.

[0117] As described in more detail above, some embodiments described herein provide an optical receiver system. The optical receiver system includes a phase shifter device. The optical receiver system includes a power combiner device coupled to the phase shifter device. The optical receiver system includes a power splitter device coupled to the power combiner device. The optical receiver system includes a photodiode device coupled to the power splitter device.

[0118] In some embodiments of the present invention, the phase shift device includes a thermal phase shift device, the thermal phase shift device including an integrated circuit using thermally induced phase change and free carrier injection to synchronize the light waves of the first incident light and the second incident light. In some embodiments of the present invention, the power combiner device includes a multimode interference device, the multimode interference device including a single input port and two output ports. In some embodiments of the present invention, the power divider device includes a directional coupler device arranged to control the ratio of the first output of the power divider device relative to the second output of the power divider device. In some embodiments of the present invention, the first waveguide of the photodiode device is connected to the first output of the power divider device, and the second waveguide of the photodiode device is connected to the second output of the power divider device. In some embodiments of the present invention, at least one input of the phase shift device is connected to the output of a two-dimensional grating coupler device. In some embodiments of the present invention, the phase shift device, the power combiner device, and the power divider device are located on a single semiconductor die. In some embodiments of the present invention, the phase shift device, the power combiner device, and the power divider device are distributed across at least two semiconductor dies.

[0119] As described in more detail above, some embodiments described herein provide an optical receiver system. The optical receiver system includes a demultiplexer device. The optical receiver system includes a phase shifter device coupled to the demultiplexer device. The optical receiver system includes a power splitter device. The optical receiver system includes a photodiode device coupled to the power splitter device.

[0120] In some embodiments of the present invention, the demultiplexer device comprises a multimode device, the multimode device comprising two input ports and two output ports. In some embodiments of the present invention, the power divider device comprises a multimode device, the multimode device comprising two input ports and two output ports, and is configured to control a ratio of a first output of the power divider device relative to a second output of the power divider device. In some embodiments of the present invention, at least one input of the phase shifter device is connected to an output of a two-dimensional grating coupling device, wherein at least one output of the phase shifter device is connected to an input of the demultiplexer device, and wherein at least one output of the demultiplexer device is connected to an input of the power divider device. In some embodiments of the present invention, the optical receiver system further comprises a power combiner device, wherein at least one input of the demultiplexer device is connected to an output of a two-dimensional grating coupling device, wherein at least one input of the phase shifter device is connected to an output of the demultiplexer device, wherein at least one input of the power combiner device is connected to an output of the phase shifter device, and wherein at least one input of the power divider device is connected to an output of the power combiner device. In some embodiments of the present invention, the power combiner device comprises a Y-junction device. In some embodiments of the present invention, the demultiplexer device, the phase shifter device, the power combiner device, and the power divider device are on a single semiconductor die. In some embodiments of the present invention, the demultiplexer device, the phase shifter device, the power combiner device, and the power divider device are distributed across at least two semiconductor dies.

[0121] As described in greater detail above, some embodiments described herein provide a method. The method includes receiving a first incident light and a second incident light through an optical circuit between a two-dimensional grating coupling device and a photodiode device. The method includes converting the first incident light and the second incident light into time-fixed photocurrents, respectively, through the optical circuit and the photodiode device. The method includes providing, by the photodiode device, a current to a transimpedance amplifier based on the corresponding time-fixed photocurrents. The method includes converting, through the transimpedance amplifier, the current into an output voltage for use by an optical communication system.

[0122] In some embodiments of the present invention, the first incident light and the second incident light comprise lightwaves of a single wavelength, and wherein converting the first incident light and the second incident light into respective time-fixed photocurrents further comprises: transmitting the first incident light and the second incident light through respective phase shifting devices, transmitting outputs from the respective phase shifting devices through a power combiner device, and transmitting the output of the power combiner device through a power divider device having a controllable power splitting ratio. In some embodiments of the present invention, the first incident light and the second incident light comprise lightwaves of multiple wavelengths, and wherein converting the first incident light and the second incident light into respective time-fixed photocurrents further comprises: transmitting the first incident light through a first demultiplexer device, transmitting the second incident light through a second demultiplexer device, transmitting outputs of the same wavelength from the first demultiplexer device and the second demultiplexer device through respective phase shifting devices, transmitting outputs from the respective phase shifting devices through a power combiner device, and transmitting the output of the power combiner device through a power divider device having a controllable power splitting ratio. In some embodiments of the present invention, the first incident light and the second incident light include multi-wavelength light waves, and converting the first incident light and the second incident light into respective time-fixed photocurrents further includes: transmitting the first incident light and the second incident light through respective phase shifting devices, transmitting the output from the respective phase shifting devices to a demultiplexer device, transmitting the output of the first wavelength from the demultiplexer device through a first power divider device having a first controllable power distribution ratio, and transmitting the output of the second wavelength from the demultiplexer device through a second power divider device having a second controllable power distribution ratio.

[0123] As used herein, “satisfying a threshold” may mean greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0124] As used herein, the term "and / or," when used in conjunction with multiple items, is intended to cover each of the multiple items individually as well as any and all combinations of the multiple items. For example, "A and / or B" covers "A and B," "A and not B," and "B and not A."

[0125] The foregoing summarizes several embodiments so that those skilled in the art may better understand various aspects of the present disclosure. Those skilled in the art will appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures to achieve the same purposes and / or advantages as the embodiments described herein. Those skilled in the art will also appreciate that such equivalent constructions do not depart from the spirit and scope of the present disclosure, and that they may make various changes, substitutions, and modifications without departing from the spirit and scope of the present disclosure.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical receiver system, characterized in that include: Phase shifting device; a power combiner device coupled to the phase shift device; a power divider device coupled to the power combiner device; as well as A photodiode device is coupled to the power divider device.

2. The optical receiver system according to claim 1, wherein The phase shift device includes a thermal phase shift device, wherein the thermal phase shift device includes an integrated circuit using a thermally induced phase change and free carrier injection to synchronize the light waves of the first incident light and the second incident light. The power combiner device includes: a multi-mode interference device, the multi-mode interference device including a single input port and two output ports; and Wherein the power divider arrangement comprises: a directional coupler arrangement arranged to control a ratio of a first output of the power divider arrangement relative to a second output of the power divider arrangement.

3. The optical receiver system according to claim 1, wherein wherein a first waveguide of the photodiode arrangement is connected to a first output of the power divider arrangement, and The second waveguide of the photodiode device is connected to the second output of the power divider device.

4. The optical receiver system according to claim 1, wherein At least one input of the phase shift device is connected to an output of the two-dimensional grating coupler device.

5. The optical receiver system according to claim 1, wherein wherein the phase shifting device, the power combiner device, and the power divider device are located on a single semiconductor die.

6. The optical receiver system according to claim 1, wherein The phase shift device, the power combiner device and the power divider device are distributed across at least two semiconductor dies.

7. An optical receiver system, characterized in that include: Demultiplexer device; a phase shifting device coupled to the demultiplexer device; Power divider device; as well as A photodiode device is coupled to the power divider device.

8. The optical receiver system according to claim 7, wherein: wherein at least one input of the phase shifting device is connected to an output of the two-dimensional grating coupling device, wherein at least one output of said phase shifting means is connected to an input of said demultiplexer means, and Wherein at least one output of the demultiplexer device is connected to an input of the power divider device.

9. The optical receiver system according to claim 7, wherein: Also includes: Power combiner device, wherein at least one input of the demultiplexer means is connected to an output of the two-dimensional grating coupling means, wherein at least one input of said phase shifting means is connected to an output of said demultiplexer means, wherein at least one input of said power combiner means is connected to an output of said phase shifting means, Wherein at least one input of the power divider device is connected to an output of the power combiner device.

10. The optical receiver system according to claim 9, wherein: The power combiner device comprises: Y-type joint device.

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