33 results about "Arrayed waveguide grating" patented technology

The invention provides a high-resolution broadband integrated spectrometer based on thin film lead zirconate titanate and a preparation method, and relates to the technical field of integrated optics. The structure of the spectrometer comprises a substrate; the silicon dioxide lower cladding layer is arranged on the substrate; the lead zirconate titanate thin film waveguide layer is arranged on the silicon dioxide lower cladding, a plurality of micro-ring resonators and a plurality of array waveguide gratings are arranged in the lead zirconate titanate thin film waveguide layer, and each array waveguide grating is connected with each micro-ring resonator through a waveguide; the sectional periodic metal electrode arrangement system is arranged in each section of straight waveguide area in the micro-ring resonator; wherein the plurality of micro-ring resonators are configured with resonant wavelengths which are distributed in a staggered manner, and the interval between the adjacent resonant wavelengths is 1 / n of the interval between the array waveguide grating channels; the spectrometer is configured to change the local waveguide refractive index by using the residual polarization effect of the lead zirconate titanate thin film through a segmented polarization method so as to realize alignment of the resonant wavelength and the center of the array waveguide grating channel.

The application discloses an end-to-end optical computing chip based on multi-modal analog signal fusion processing, and belongs to the technical field of optical computing. The chip comprises a multi-modal input fusion front-end module, a fiber input interface and an end-to-end inference module. The multi-modal input fusion front-end module can convert different types of original analog signals such as images, spectra and radio frequencies into unified broadband spectral input signals. The end-to-end inference module builds a deep optical neural network, which comprises a "sensing-convolution integrated" unit realized by an arrayed waveguide grating (AWG). The end-to-end inference module also comprises an optoelectronic nonlinear-pooling integrated unit, which simultaneously realizes the functions of average pooling and nonlinear activation, and effectively compensates for optical path loss through injection of a light source. Finally, the signals processed by multiple layers are integrated by a full connection layer, and a classification result is output by an output layer. The chip architecture realizes direct and efficient processing of multi-modal analog signals.

The embodiment of the invention provides a vehicle-mounted communication method, device and system and a storage medium, and relates to the technical field of communication. The method comprises the following steps: allocating a wavelength channel for each sensor through a dynamic wavelength allocation controller according to the type and communication load of the sensor; according to the wavelength channel allocated to each sensor, generating an optical signal of a corresponding wavelength through a temperature control distributed feedback laser, and modulating data of each sensor to the optical signal of the corresponding wavelength; the modulated optical signals with different wavelengths are input into an array waveguide grating multiplexer to be multiplexed into single-path optical signals, and demultiplexing is carried out through an array waveguide grating demultiplexer to generate data of each sensor; the communication load of each sensor is fed back to the dynamic wavelength allocation controller. According to the method, based on the types of the sensors and the communication loads, wavelength channels are dynamically allocated to different sensors, the time delay of multiplexing and demultiplexing is reduced, and therefore the real-time performance and reliability of vehicle-mounted communication are improved.

The application discloses a dense optical fiber coding method based on an optical switch and a weak reflectivity grating string, and comprises the following steps: 1, a light source module emits a C-band pulse signal, and the signal contains optical pulses with different central wavelengths and overlapping in a time domain; 2, a weak reflectivity grating string is used to code each node to obtain different wavelength pulse combination types, and the coding signals of different coding nodes on the same link are spaced apart in the time domain; 3, the coding signal is injected into an array waveguide grating through an optical circulator, and is decomposed into more than one single-wavelength pulse signal; 4, a detector array and a collection card are used to carry out photoelectric conversion on the coding pulse signal, and the collected signal is output to an FPGA and an upper computer for processing and display; the problems that the prior art cannot be applied to realize real-time coding of a large-scale and high-reliability all-optical network and that the real-time coding scale is limited and cannot meet the use requirements of a large-scale network are solved.

A coupling device for a multi-channel optical fiber array and a multi-layer arrayed waveguide grating, includes: a first clamping component and a second clamping component. A plurality of optical fibers that are spaced apart in an X-axis direction are connected on the first clamping component, each optical fiber extends in a Y-axis direction, and a plurality of arrayed waveguide gratings that are spaced apart in the X-axis direction are connected on the second clamping component. Each arrayed waveguide grating extends in the Y-axis direction, the optical fibers and the arrayed waveguide gratings are disposed in a one-to-one coaxial mapping manner, each arrayed waveguide grating is right-trapezoid-shaped, and beveled surfaces of any two arrayed waveguide gratings are located on a same plane. A wavelength division multiplexing technology is combined with a multi-channel parallel transmission technology.

Athermal arrayed waveguide grating structure that may operate as an optical filter including an input Silicon (Si) slab waveguide, an output Si slab waveguide, the input Si slab waveguide and the output Si slab waveguide optically connected by an arrayed group of Silicon Nitride (SiN) grating waveguides. Temperature insensitivity of the structure is achieved by locating output waveguide(s) of the Si output slab waveguide at / within a 10-degree angle offset from the center line of the output Si slab waveguide.

Thermally compensated waveguides are disclosed herein. According to one aspect, the present disclosure proposes new ways to combine negative TOC (NTOC) material layers within the waveguides. NTOC materials can be implemented in one or more of a cladding layer, a core rib / channel waveguide, a horizontally segmented waveguide, a vertically segmented waveguide, a sub-wavelength grating structure, and / or in various other waveguide structure implementations including arbitrary core or cladding shapes. The integration of NTOC materials improves the temperature dependence of the waveguide spectrum. The need for fast and efficient optical-based technologies is increasing as Internet data traffic growth rate is overtaking voice traffic, pushing the need for optical communications. The new waveguide structures can be integrated into waveguides, individual devices, integrated devices like arrayed waveguide grating devices, and photonic integration circuits (PICs), decreasing temperature dependence of such devices and circuits.

The utility model provides a dense wavelength division multiplexing transmission system capable of expanding O-band wavelength signals, which comprises a first main circuit and a second main circuit which can mutually transmit optical signals, the first main circuit comprises a first array waveguide grating module, one side of the first array waveguide grating module is in butt joint with a plurality of first main circuit optical modules, and the other side of the first main circuit optical modules is in butt joint with a plurality of second main circuit optical modules. The other side of the first array waveguide grating module is sequentially connected with a first filter and a dispersion compensation module, a first amplifier is further arranged between the first array waveguide grating module and the first filter, one side of the dispersion compensation module is in butt joint with a first expansion port, and the first expansion port is connected with a first expansion branch. Compared with the prior art, the system has the advantages that the C band DWDM optical module is directly adopted in the main line, signal conversion does not depend on the Muxponder, the transmission rate of each channel can be increased to 100 Gbps or above, O band wavelength signals are also combined into the main line for long-distance transmission, and the ever-increasing communication requirements are met.

The present disclosure provides a polarization-insensitive array waveguide grating applied to the field of optical communication wavelength division multiplexing technology, comprising: an input channel waveguide, which inputs multi-wavelength mixed polarization state composite light into an input slab waveguide area; the input slab waveguide area diffracts the multi-wavelength mixed polarization state composite light; a first array waveguide module, which performs power distribution on the diffracted light from the input slab waveguide area to form a plurality of first composite lights, and transmits the first composite lights to corresponding polarization beam splitters respectively; a polarization beam splitter module, which separates each first composite light into a plurality of multi-wavelength second composite lights with single polarization; a second array waveguide module, which transmits the plurality of second composite lights to an output slab waveguide area respectively; the output slab waveguide area diffracts the plurality of second composite lights and focuses the diffracted light of different wavelengths to different output channel waveguides; and the output channel waveguide, which outputs light of different polarization states at the same specific wavelength.

The present application relates to an array waveguide grating. The array waveguide grating comprises an input coupler, a waveguide array and an output coupler, wherein the waveguide array is coupled between the input coupler and the output coupler, and the waveguide array comprises a plurality of waveguides; the input coupler is used for allocating received optical signals to the plurality of waveguides, and the waveguides are used for guiding the allocated optical signals; and the output coupler is used for coupling the optical signals, which are transmitted on the plurality of waveguides. The input coupler has a first refractive index, each waveguide has a second refractive index, and the output coupler has a third refractive index, wherein the first refractive index and the third refractive index are both greater than the second refractive index. The array waveguide grating can solve both the problem of an insertion loss of a star coupler being relatively high and the problem of a phase error being relatively large due to the roughness of a side wall of a waveguide, and insertion loss of the array waveguide grating is relatively low.

The present application belongs to the field of communication technology, and particularly relates to a kind of on-chip multi-path broadband white noise generation method based on chaotic micro-ring optical frequency comb, the implementation of the method includes semiconductor laser, micro-ring resonator, arrayed waveguide grating, photodetector, characterized by: the above-mentioned devices are integrated in the same chip substrate;Semiconductor laser output continuous light injection micro-ring resonator will occur four-wave mixing, self-phase modulation, cross-phase modulation and dispersion combined action, and equal-interval chaotic optical frequency comb is output through the straight-through end of micro-ring resonator.Coupling together after a plurality of micro-ring resonators generate chaotic optical frequency comb of different free spectral range, demultiplexing is carried out through arrayed waveguide grating, and finally multi-path broadband noise signal is output.Compared with existing noise source, the structure is simple, and has the advantages of low power consumption, high stability, bandwidth expansion, and solves the problem of lack of multi-path broadband noise signal implementation scheme, and can be applied to the field of secure communication, random number generation, etc.

The present application relates to the field of on-chip waveguide spectrum splitting technology, and particularly to a polarization-insensitive arrayed waveguide grating structure and a design method thereof. The structure comprises an input end waveguide, an input slab waveguide, an array waveguide, an output slab waveguide and an output end waveguide connected in sequence along the light propagation direction; the array waveguide comprises a plurality of strip waveguides, and the adjacent strip waveguides have a preset optical path difference; the input end waveguide, the strip waveguide and the output end waveguide all adopt a vertical coupling double-core three-layer waveguide structure. By introducing the double-core three-layer waveguide structure, the light field coupling effect formed by the two high refractive index waveguide core layers and the intermediate low refractive index isolation layer is utilized to regulate the electromagnetic field distribution of the TE mode and the TM mode in the waveguide cross section, and then the effective refractive index and the group refractive index of different polarization modes are adjusted, the phase consistency of the TE mode and the TM mode is ensured, and on the premise of maintaining the compact size of the device, the performance targets of low insertion loss, high spectral resolution and polarization insensitivity are achieved.

This invention relates to a highly symmetric, wide-bandwidth flexible arrayed waveguide grating chip for FBG demodulation systems, belonging to the field of planar optical waveguide device technology. It comprises a polymer flexible substrate, a polymer lower cladding, a polymer waveguide core, and a polymer upper cladding. The refractive indices of the polymer upper and lower cladding materials are lower than those of the polymer waveguide core material. The polymer waveguide core is an optical waveguide structure integrated from two AWG and two MMI units. This invention solves the defects of existing arrayed waveguide gratings in FBG demodulation systems, such as demodulation blind zones and unidirectional transmission. It achieves demodulation with a wide dynamic range and high resolution for reflected wavelengths and supports bidirectional signal input and output at both ports, improving system flexibility. Furthermore, the use of polymer materials to fabricate optical waveguide devices offers significant advantages over inorganic material systems, including better flexibility, simpler processing, lower cost, and higher efficiency, making it suitable for dynamic deformation environments or bio-integrated scenarios.

The application provides a power adjustable wavelength division multiplexer with power-off protection function, which aims to solve the technical problem that the existing power adjustable wavelength division multiplexer does not have power-off alarm function, so that the optical network cannot realize automatic switching protection, timely fault positioning and fault recovery. The application comprises an array waveguide grating module group, a variable optical attenuator array module group and a circuit controller module group, the circuit controller module group is connected with the variable optical attenuator array module group, the circuit controller module group is provided with a VOA controller and an OS controller, the VOA controller is connected with the variable optical attenuator array module group, the OS controller is connected with an optical switch module group, and the optical switch in the optical switch module group works in a closed state when not powered and works in an open state when powered. The optical switch of the application is in a closed state, and the optical power is abnormal, so that the power adjustable wavelength division multiplexer has power-off protection function.

The application discloses a programmable integrated chip and a control method for a high-speed communication network. The chip comprises a fiber coupler array, a plurality of electro-optical modulators, a plurality of optical switches, a plurality of cross waveguides and an array waveguide grating. The fiber coupler array comprises a plurality of first fiber couplers, a plurality of second fiber couplers and a third fiber coupler. Each output end of the first fiber couplers is connected to each input end of the plurality of electro-optical modulators in one-to-one correspondence. Each output end of the plurality of electro-optical modulators is connected to each input end of the plurality of optical switches in one-to-one correspondence. Each optical switch comprises two output ends. One output end is connected to the input end of the second fiber coupler directly or through a cross waveguide. The other output end is connected to the input end of the array waveguide grating directly or through a cross waveguide. The output end of the array waveguide grating is connected to the input end of the third fiber coupler. The chip can be applied to both a multi-wavelength transmission scene and a single-wavelength transmission scene.

A segmented planar imaging system based on a beam splitter includes a lens array comprising lens columns. Microlenses within each lens column are paired to form baselines. These baselines are formed by the interference of light rays from two microlenses as a set of interference beams. Each microlens has two baseline formation methods. The imaging system also includes a photonic integrated circuit and an image processing module. The photonic integrated circuit includes an integrated beam splitter, an arrayed waveguide grating, waveguide transmission lines, and multiple balanced quadrature detectors. Each lens column is connected to one photonic integrated circuit. In this segmented planar imaging system, each microlens participates in forming two baselines via a beam splitter, and individual interferometer arms employ complementary baseline pairing methods. This increases the acquisition of spatial frequency information lacking in traditional systems, further improving the imaging quality of the system.

The invention relates to the technical field of optical fiber sensing demodulation, in particular to a fiber bragg grating demodulation system based on phase modulation and an arrayed waveguide grating. A narrow linewidth laser of the system is used for generating an optical signal; the optical circulator is used for transmitting an optical signal to the fiber bragg grating sensor and receiving reflected light; the high-speed phase modulator is used for performing phase modulation on the reflected light to generate an optical frequency comb; the multi-channel array waveguide grating is used for dispersing light with different spectral components in the optical frequency comb to corresponding output channels according to wavelengths; the photoelectric detection array is used for detecting the optical power of the output channel and converting the optical power into an electric signal; and the digital signal processing unit is used for collecting the electric signals, comparing the electric signals with the calibration database and demodulating the central wavelength of the fiber bragg grating sensor. According to the invention, the defect that the traditional array waveguide grating demodulation method is limited by channel spacing and is difficult to realize high resolution is overcome, and the demodulation precision is improved.

The invention, which belongs to the technical field of optical communication, discloses an optical receiving assembly comprising a circuit board, an array waveguide grating, a photoelectric detector, a trans-impedance amplifier and a substrate. The circuit board is provided with a first conductive pattern, and the first conductive pattern comprises a plurality of pairs of differential signal lines and a plurality of grounding lines of a receiving end. A second conductive pattern is arranged on the substrate, the second conductive pattern comprises a plurality of pairs of fan-out differential traces and a plurality of fan-out ground wires, the fan-out ground wires are fan-out side by side, a pair of fan-out differential traces is arranged between every two adjacent fan-out ground wires, and the trans-impedance amplifier is electrically connected with the circuit board through the second conductive pattern. The substrate is added between the trans-impedance amplifier and the differential signal lines of the circuit board, and the fan-out differential traces are arranged on the substrate so as to be matched with the channel spacing of the differential signal lines with larger channel spacing on the circuit board, so that the length of the bonding wire can be shortened, the signal crosstalk is further reduced, and the high-frequency performance is optimized.

The invention belongs to the technical field of photon integrated interference imaging, and particularly relates to a novel photon integrated interference imaging system. The sub-aperture array is used for collecting a target light beam reflected by a to-be-measured target, the optical fiber coupler array is used for splitting the target light beam, and the optical fiber bundle array is used for transmitting a light beam output by the optical fiber coupler array to the array waveguide grating for light beam decomposition; the phase shift interferometer array is used for performing interference synthesis on light beams output by the array waveguide grating, and the detector array receives optical signals output by the phase shift interferometer array to realize image reconstruction of a to-be-detected target. According to the invention, the coupling problem between the spatial light and the large-scale optical waveguide and the image splicing problem after view field segmentation are effectively avoided, the complexity of the system is greatly reduced in large-scale array extension application, and the technical advantages of the photon integrated interference imaging technology relative to traditional imaging are continuously highlighted.

The invention discloses a multi-plane intelligent computing center optical interconnection architecture based on a multi-wavelength tunable emitter and a communication method. The architecture comprises an optical switching plane formed by modularization interconnection of a plurality of small-port array waveguide gratings, and a communication node array comprising a plurality of communication nodes. Each communication node is equipped with a plurality of optical transmitting modules and optical receiving modules, and the optical transmitting modules are integrated with multi-wavelength tunable transmitters and can simultaneously generate and independently tune a plurality of optical signals with different wavelengths. Through wavelength tuning and the cyclic wavelength routing characteristic of the array waveguide grating, an optical link with variable capacity can be dynamically established between any source node and any destination node, and one-to-many fan-out communication is supported. According to the method, nanosecond reconstruction delay, fine-grained bandwidth flexible adjustment and high-energy-efficiency interconnection with large-scale nodes are realized, dynamic, burst and skew communication loads of an intelligent calculation center are effectively adapted, and the network performance and energy efficiency are improved.

The invention provides a high-resolution optical performance monitoring device and method based on an arrayed waveguide grating. The high-resolution optical performance monitoring device comprises an optical input end, an optical switch, the arrayed waveguide grating, a frequency regulation and control unit, a photoelectric detector array, a data processing circuit and a control circuit. The frequency regulation and control unit is connected with the array waveguide grating to carry out frequency regulation and control, and the data processing circuit is connected with a signal output port of the photoelectric detector array; and the control circuit is connected with the optical switch, the frequency regulation and control unit and the data processing circuit and is used for acquiring an instruction which is sent by the data processing circuit and aims at the optical switch and the frequency regulation and control unit. The optical switch and the array waveguide grating are combined to enhance the demultiplexing capacity of the optical switch and the array waveguide grating to optical signals, high-resolution optical performance monitoring is achieved, meanwhile, the complexity of the system is not increased, and the optical performance monitoring device has the advantages of being small in size, low in cost and high in reliability. Furthermore, by regulating and controlling the frequency shift of the array waveguide grating, the number of monitoring channels is increased, the sampling density is improved, and optical performance monitoring with higher resolution is achieved.

An arrayed waveguide grating device includes an input coupler configured to receive a light signal and split the light signal into a plurality of output light signals. The device also includes a plurality of waveguides optically connected to the input coupler, each waveguide having a plurality of waveguide portions having respective sensitivities to variance in one or more parameters associated with operating of the optical arrayed grating device. Lengths of the respective portions are determined such that each waveguide applies a respective phase shift to the output light signal that propagates through the waveguide and the plurality of waveguides have at least substantially same change in phase shift with respective changes in the one or more parameters associated with operation of the device. An output coupler is optically connected to the plurality of waveguides to map respective light signals output from the plurality of waveguides to respective focal positions.

The utility model relates to the technical field of optical communication, in particular to a wavelength division multiplexing optical transceiving integrated device. Comprising a transmitting assembly and a receiving assembly, the transmitting assembly comprises a plurality of laser chips, a first array waveguide grating and a first optical fiber, the first array waveguide grating is used for receiving internal optical signals transmitted by each laser chip, combining the plurality of internal optical signals and then transmitting the combined signals to the first optical fiber, and the first optical fiber is used for being communicated with external communication equipment; the receiving assembly comprises a plurality of PD chips, a second array waveguide grating and a second optical fiber, the second optical fiber is used for receiving external optical signals and sending the external optical signals to the second array waveguide grating, and the second array waveguide grating is used for dividing the external optical signals into multiple beams and sending the multiple beams to the PD chips in a one-to-one correspondence mode. According to the utility model, the number of used optical fibers is reduced, the number of parts in the device is further reduced, the structure is simple, the size of the device is reduced, the overall packaging cost is reduced, and the working stability is high.

This invention relates to the field of optical communication device coupling and assembly technology, and in particular to an AWG and FA fiber coupling method based on reverse spot positioning. This solution adopts the mainstream AWG three-axis translation platform architecture used in mass production, while simplifying the motion mechanism at the FA end, eliminating redundant translation axes on the FA side, and retaining only the three-axis rotation adjustment function. While meeting the requirements for high-precision angle adjustment, it simplifies the mechanical structure and control logic, reducing equipment manufacturing, debugging, and maintenance costs, making it more suitable for large-scale mass production applications. This invention uses a sealed fixture with a built-in high-coherence light source for reverse illumination, utilizing the mode selection and shaping characteristics of the arrayed waveguide grating to form a Gaussian spot at the chip input end. The center of the spot directly calibrates the actual waveguide axis inside the chip, solving the problem that traditional visual alignment can only identify the shape but cannot locate the waveguide axis. Coarse alignment accuracy is significantly improved, effectively reducing initial alignment deviation.

The invention discloses an on-chip integrated micro spectrometer and an implementation method thereof, an input optical fiber is used for coupling light to be analyzed into a light beam splitting tree through a coupling grating, and the light beam splitting tree uniformly distributes light power to each waveguide channel of an optical phased array; a phase modulator of the optical phased array is arranged above each waveguide of the optical phased array to perform phase regulation and control; the optical phased array is connected with the array waveguide grating through the phase compensator, and it is ensured that adjacent waveguides have the same length difference. The array waveguide grating comprises a Rowland disc, the phase difference between adjacent array waveguides is changed through phase tuning, the filtering response of an output waveguide at the Rowland disc is changed, and light beams with different wavelengths are sequentially output from an output port of the Rowland disc and enter the photoelectric detector. Spectral analysis can be completed only through a single detector, the purposes of higher efficiency, rapidness and accuracy are achieved, and the device size can be further reduced.

The invention discloses an optical receiving assembly, which comprises a waveguide substrate, a photoelectric detector array and a trans-impedance amplifier, and is characterized in that the photoelectric detector array and the trans-impedance amplifier are arranged on the first surface of the waveguide substrate; an array waveguide grating is arranged in the waveguide substrate, and a wiring pattern layer is arranged on the first surface of the waveguide substrate; the photosensitive surface of the photoelectric detector array faces the first surface of the waveguide substrate, and the photosensitive surface of each photoelectric detector corresponds to each light outlet of the waveguide substrate; the transimpedance amplifier is electrically connected with the photoelectric detector through the wiring pattern layer. According to the invention, the photoelectric detector array and the transimpedance amplifier are arranged on the surface of the waveguide substrate where the array waveguide grating is located, so that the array waveguide grating, the photoelectric detector array and the transimpedance amplifier are located on the same waveguide substrate, thereby effectively reducing the relative position offset between core devices when the temperature changes. The whole optical path is not easy to deform, so that the stability and reliability of the optical receiving assembly are improved.

The application relates to an on-chip spectrometer and a spectrum measurement system. The on-chip spectrometer comprises a tunable filter part, a reflective arrayed waveguide grating part and an integrated photodetector part, wherein a reflector is connected to the end of the equal-difference arrayed waveguide of the reflective arrayed waveguide grating, and only a single star coupler is contained, the layout mode of the equal-difference arrayed waveguide is no longer limited, the length difference between adjacent waveguides is no longer limited, the free spectral range of the reflective arrayed waveguide grating can be very large, and the measurement bandwidth of the on-chip spectrometer will be larger. Meanwhile, a micro-ring resonator with a free spectral range slightly larger than the reflective arrayed waveguide grating and a resonant wavelength that can be adjusted is used to perform high-resolution filtering on the light signal to be measured. Therefore, the application can realize high-resolution and large-bandwidth light signal detection and analysis.

The invention belongs to the technical field of optical fiber sensing, testing and measuring, and discloses an optical fiber F-P sensor high-speed phase demodulation system based on array waveguide grating and space intensity parallel detection, which comprises a broadband light source, an optical circulator, an optical fiber FP sensor, an array waveguide grating, a photoelectric detection array, a signal acquisition and processing module and a data output module, mapping from a spectrum to a space is realized by using an array waveguide grating, high-speed demodulation of phase information of the optical fiber Fabry-Perot sensor is realized by combining parallel detection of a high-speed photoelectric detection array, phase demodulation precision is further improved by introducing an interpolation algorithm, and dynamic and high-precision demodulation of the optical fiber Fabry-Perot sensor is realized. The optical fiber F-P sensor high-speed phase demodulation system does not contain any passive regulation and control element or discrete detection device, so that the system can provide demodulation performance with higher integration level and better stability.

An arrayed waveguide grating (50), an optical transmitting apparatus (20), an optical receiving apparatus (40), and an optical communication system (10) are provided. The arrayed waveguide grating (50) includes m first waveguides (501), a first coupler (502), k second waveguides (503), a second coupler (504), and n third waveguides (505), where m, n, and k are all positive integers, and lengths of the k second waveguides (503) sequentially increase. The first waveguide (501) is configured to transmit a first optical signal to the first coupler (502). The first coupler (502) is configured to generate k second optical signals based on the first optical signal. The second waveguide (503) is configured to transmit the second optical signal to a first phase shift structure (506). The first phase shift structure (506) is configured to adjust an amplitude of one or more optical signals with different wavelengths in the second optical signal to generate a third optical signal. The second coupler (504) is configured to generate n fourth optical signals based on the third optical signal. The third waveguide (505) is configured to output the fourth optical signal. The optical transmitting apparatus (20), the optical receiving apparatus (40), and the optical communication system (10) that include the arrayed waveguide grating (50) are further provided.

An arrayed waveguide grating device includes an input unit, a transmission unit, an adjustment unit and an output unit. The input unit includes an input optical fiber, and a first coupler connected to the input optical fiber. The transmission unit includes multiple transmission optical fibers that are connected to the first coupler and arranged side by side in an order from shortest to longest. The adjustment unit includes a red-shift heater and a blue-shift heater, each of which is configured to heat portions of the transmission optical fibers in a respective one of a red-shift adjustment region tapering along a first direction from the longest to the shortest transmission optical fibers and a blue-shift adjustment region tapering along a second direction reverse to the first direction. The output unit includes a second coupler connected to the transmission optical fibers, and multiple output optical fibers connected to the second coupler.