Light processing device

Abstract

The application discloses an optical processing device, which belongs to the technical field of communication and comprises an optical output component, a plurality of lenses and an optical receiving component. The optical output component is used for outputting an initial light beam along a fixed light path. The plurality of lenses are distributed in a plane perpendicular to the fixed light path. Each lens in the plurality of lenses is used for receiving a sub light beam in the initial light beam, different lenses in the plurality of lenses receive different sub light beams in the initial light beam, and the power of the sub light beams received by at least two lenses in the plurality of lenses is different. Each lens in the plurality of lenses is also used for outputting a target light beam to the optical receiving component after mapping the received sub light beam into the target light beam, and the light spots of the target light beams output by the plurality of lenses are coincident on the optical receiving component. The application can reduce the system insertion loss of the light beam, and is used for processing of the light beam.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an optical processing device. Background Technology

[0002] In the field of communications, communication devices communicate based on light beams carrying signals (which can be called optical signals). During the communication process, the light beam passes through communication devices, optical components, and so on.

[0003] The aforementioned beam is obtained by laser modulation emitted from a laser, resulting in a Gaussian energy distribution. This Gaussian distribution manifests as a phenomenon where the optical power of the beam spot is high at the center and low around the edges in a plane perpendicular to the transmission direction. However, when the beam's energy is Gaussian, both the wavelength dependent loss (WDL) and temperature dependent loss (TDL) are relatively large, leading to a significant system insertion loss (IL). This results in signal degradation and negatively impacts communication performance.

[0004] Therefore, it is urgent to adjust the beam used for communication between devices in order to reduce the system IL of the beam. Summary of the Invention

[0005] This application provides an optical processing apparatus capable of reducing the system IL of a light beam. The solution provided by this application is as follows.

[0006] In a first aspect, this application provides an optical processing apparatus, comprising: an optical output component, a plurality of lenses, and an optical receiving component. The optical output component is used to output an initial light beam along a fixed optical path. The fixed optical path remains unchanged, such that the shape and size of the light spot of the initial light beam output by the optical output component remain fixed, and the output angle and other characteristics of the initial light beam on the optical output component also remain fixed.

[0007] The light output component is located at one end of the aforementioned fixed optical path, and multiple lenses are located on this fixed optical path, distributed in a plane perpendicular to the fixed optical path. Each of these lenses is used to receive one sub-beam from the initial beam, and the sub-beams received by different lenses from the initial beam are different. At least two lenses receive sub-beams with different powers.

[0008] Each of the multiple lenses is also used to map the received sub-beams into a target beam before outputting it to the light receiving component. Furthermore, the target beams output by the multiple lenses overlap the light spots on the light receiving component. The process of the multiple sub-beams in the initial beam being transmitted to the multiple lenses is equivalent to the "differentiation" of the beam, and the process of the multiple target beams output by the multiple lenses being transmitted to the light receiving component is equivalent to the "integration" of the beam.

[0009] As can be seen, the output beam of the entire system of multiple lenses includes the target beam mapped from each sub-beam of the initial beam. The optical power of this output beam at any position in the light spot on the optical receiving component is the sum of the powers of each sub-beam of the initial beam, making the optical power of the output beam at various positions in the light spot on the optical receiving component relatively consistent, and the energy distribution at various positions in the light spot relatively uniform. Therefore, the energy of the beam received by the optical receiving component is not Gaussian distributed. Consequently, the TDL and WDL of the beam received by the optical receiving component are not large, which solves the problem of large TDL and WDL of the beam when the beam energy is Gaussian distributed, as well as the problem of large system insertion loss of the beam.

[0010] Furthermore, the lens maps the received sub-beam to the target beam without filtering, thus avoiding the beam power reduction problem caused by filtering. Moreover, the solution provided in this application embodiment does not require a temperature control component, thus avoiding the increased complexity associated with such a component.

[0011] Furthermore, since the optical power at various positions within the beam spot received by the optical receiving component is relatively uniform, the optical power at each position within the beam spot is high. Even if there is some deviation between the center of the beam spot received by the optical receiving component and a designated position within the optical receiving component, the component (or the component in combination with other components) can still process the beam to extract its signal. Therefore, the embodiments of this application have relatively low requirements for the collimation of the beam received by the optical receiving component, and a certain degree of error is allowed in the position of the center of the beam spot on the optical receiving component.

[0012] Optionally, the shape and size of the light spot on the light output component and the light spot on the light receiving component of the initial beam are the same. Therefore, although multiple lenses are added between the light output component and the light receiving component, it is not necessary to change the light receiving component (or the light receiving component and other subsequent components) to process multiple target beams.

[0013] Optionally, the wavelength range of the initial beam is 1520 nm to 1560 nm, or 1520 nm to 1629 nm. When the wavelength range of the initial beam is 1520 nm to 1560 nm, the initial beam is referred to as a C-band beam. When the wavelength range of the initial beam is 1520 nm to 1629 nm, the initial beam is referred to as a C+L band beam.

[0014] It is understood that lenses are wavelength-dependent, and lenses have different effects on light of different wavelengths. In the embodiments of this application, the material, shape and size of the lens can be reasonably selected according to the wavelength range of the initial beam so that the lens can have the function of the lens in the embodiments of this application.

[0015] Optionally, at least one of the multiple lenses is a spherical lens. When the lens is a spherical lens, both the incident surface and the exit surface of the lens are spherical, or the incident surface is spherical and the exit surface is planar, or the incident surface is planar and the exit surface is spherical.

[0016] Furthermore, the aforementioned multiple lenses can be distributed in various ways, such as in a regular pattern or in a random pattern. When the multiple lenses are distributed in a regular pattern, they can be symmetrically distributed about the optical axis (central axis) of the initial beam.

[0017] It is understandable that when the energy of the initial beam is Gaussian distributed, each sub-beam in the initial beam is symmetrically distributed about the optical axis of the initial beam. If multiple lenses are also symmetrically distributed about the optical axis, then these multiple lenses can map each sub-beam of the initial beam to the output beam of the multiple lenses. This allows the initial beam with Gaussian energy distribution to be mapped to an output beam with energy that is not Gaussian distributed, making multiple lenses more suitable for scenarios where the energy of the initial beam is Gaussian distributed.

[0018] Alternatively, multiple lenses can be arranged in an array, forming multiple rows and columns. In this case, the multiple lenses can be distributed symmetrically about the optical axis of the initial beam, or they can be distributed symmetrically but not about the optical axis of the initial beam; this embodiment does not limit this. When multiple lenses are arranged in an array, it facilitates the manufacture of the multiple lenses.

[0019] Optionally, at least one of the multiple lenses has a micrometer-scale size.

[0020] Optionally, the light processing apparatus provided in this application embodiment further includes multiple anti-reflection films; each anti-reflection film corresponds to a multiple lens, and the anti-reflection film is attached to the side of the corresponding lens near the light output component. The anti-reflection film is used to improve the transmittance of the sub-beam received by the corresponding lens, thereby enabling more light in the sub-beam to be transmitted to the lens and reducing the waste of light in the sub-beam.

[0021] Optionally, the light processing apparatus further includes a transparent planar substrate on which multiple lenses are located. The transparent planar substrate is positioned between the light output component and the light receiving component. With the multiple lenses positioned between the light output component and the transparent planar substrate, the amount of light reflected back to the light output component from the initial light beam by the combined structure of the multiple lenses and the transparent planar substrate can be reduced, thus minimizing the impact of this portion of light on the light output component.

[0022] The light output component in the above embodiments can be implemented in various ways.

[0023] For example, the light processing device is an optical performance monitor (OPM), which operates based on the principle of optical diffraction. The light output component is the collimator in the OPM, and the light receiving component is the folding mirror in the OPM.

[0024] For example, the optical processing device is an OPM, which operates based on the principle of optical interference. The optical output component is the collimator in the OPM, and the optical receiving component is the interference cavity in the OPM. Attached Figure Description

[0025] Figure 1 A schematic diagram of a light spot provided in an embodiment of this application;

[0026] Figure 2 An embodiment provided in this application Figure 1 A schematic diagram of the optical power at various points in the light spot shown;

[0027] Figure 3 A schematic diagram of an optical processing device provided in an embodiment of this application;

[0028] Figure 4 A schematic diagram illustrating the mapping of a sub-beam 1 to a target beam 1, provided as an embodiment of this application;

[0029] Figure 5 A schematic diagram illustrating the mapping of a sub-beam 2 to a target beam 2, provided as an embodiment of this application;

[0030] Figure 6 A schematic diagram illustrating the mapping of a sub-beam 3 to a target beam 3, provided as an embodiment of this application;

[0031] Figure 7 A schematic diagram of another light processing apparatus provided in an embodiment of this application;

[0032] Figure 8 A schematic diagram of an OPM provided for an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of another OPM provided in an embodiment of this application. Detailed Implementation

[0034] In the process of communication between devices based on a beam of light carrying a signal (which can be called an optical signal), the beam passes through communication equipment, optical devices, etc. The aforementioned beam is obtained by laser modulation emitted by a laser in the communication equipment, and the energy of the beam has a Gaussian distribution.

[0035] For example, suppose the light spot is like... Figure 1 As shown, the optical power of the light beam at each point on line x, which passes through the center of the beam spot in a plane perpendicular to the transmission direction, can be expressed as follows: Figure 2 As shown, Figure 2 In the diagram, the horizontal axis represents a point on line x, and the vertical axis represents the optical power of that point. It can be seen that the energy of the beam exhibits a Gaussian distribution, characterized by high optical power at the center of the beam spot on a plane perpendicular to the transmission direction and low optical power around the edges.

[0036] However, when the energy of the beam has a Gaussian distribution, both the TDL and WDL of the beam are relatively large.

[0037] For example, when a beam of light propagates in an optical fiber, if the temperature changes cause the fiber to deform, the light transmitted at the center and the periphery of the fiber will be affected differently at any point along the fiber's length, resulting in a larger TDL of the beam.

[0038] For example, in a Gaussian light field, the spot size (such as diameter) is related to the wavelength, so the spot size of light of different wavelengths in the beam is different. When the beam propagates in an optical fiber, under the same external force (such as the compressive force on the optical fiber, the force generated by the deformation of the optical fiber due to temperature changes, etc.), the light of different wavelengths in the beam is affected differently.

[0039] When both the TDL and WDL of a beam are large, the system IL of the beam is also large, leading to signal degradation and affecting communication performance. Therefore, it is urgent to adjust the beam used for inter-device communication to reduce the TDL and WDL, thereby reducing the system IL of the beam.

[0040] In related technologies, a film layer can be used to filter the light beam to reduce the power of higher-power wavelengths and increase the power of lower-power wavelengths, thereby making the power of different wavelengths as consistent as possible and reducing the aforementioned WDL (light density loss). However, during the filtering process, the power of wavelengths that are not at their extreme power values ​​will also be significantly reduced, resulting in a continued decrease in the system IL (light density loss) of the beam.

[0041] In related technologies, temperature control components, such as thermoelectric coolers (TECs), can be installed outside the optical fiber to maintain the ambient temperature within a fixed operating temperature range, reducing the impact of temperature changes and lowering WDL (wastewater leakage rate). However, installing temperature control components is quite complex.

[0042] It is evident that the methods for reducing the IL of a light beam in related technologies all have some problems. Based on this, embodiments of this application provide an optical processing device that can reduce the TDL and WDL of a light beam, thereby reducing the system IL of the beam. Furthermore, this optical processing device does not cause a significant reduction in the power of light at wavelengths where the power is not at its extreme value, and the complexity of the optical processing device is relatively low.

[0043] For example, Figure 3 This is a schematic diagram of the structure of a light processing device provided in an embodiment of this application, as shown below. Figure 3 As shown, the light processing device includes: a light output component 01, a plurality of lenses 02, and a light receiving component 03. Figure 3 Taking three lenses 02 as an example, it can be understood that the number of lenses 02 can be less than 3 or more than 3, and the embodiments of this application do not limit this.

[0044] The optical output component 01 is used to output an initial beam along a fixed optical path; the initial beam can be the aforementioned beam carrying a signal, which can be obtained by laser modulation emitted by a laser. The initial beam can be a beam received by the optical output component, or the initial beam can be a beam output by the optical output component after processing the received beam (such as beam splitting, beam combining, refraction, filtering, collimation, etc.), or the initial beam can be generated by the optical output component 01.

[0045] The initial beam can be a single-wavelength beam or a multi-wavelength beam, and this application does not limit this.

[0046] The light output component 01 is used to output an initial light beam along a fixed optical path. In other words, the optical path of the initial light beam when it is output from the light output component 01 is fixed. The light output component 01 outputs the initial light beam from a fixed position along a fixed direction, so that the shape and size of the light spot of the initial light beam output by the light output component 01 remain fixed. In contrast to the fixed optical path, there is a variable optical path. When the light output component 01 outputs a light beam along a variable optical path, at least one of the position and direction of the light beam output on the light output component 01 will change.

[0047] In addition, the wavelength of light in the initial beam can also remain fixed. Of course, the wavelength of light in the initial beam can also change, but this application does not limit this.

[0048] The light output component 01 is located at one end of the aforementioned fixed optical path. Multiple lenses 02 are all located on this fixed optical path and are distributed in a plane perpendicular to the fixed optical path. Each of the multiple lenses 02 is used to receive one sub-beam from the initial beam, and different lenses 02 receive different sub-beams from the initial beam (i.e., different lenses 02 receive different sub-beams from the initial beam). For example, please refer to... Figure 3 The first lens 02, counting from top to bottom, receives sub-beam 1 from the initial beam; the second lens 02 receives sub-beam 2 from the initial beam; and the third lens 02 receives sub-beam 3 from the initial beam. The three lenses 02 respectively receive different sub-beams from the initial beam.

[0049] At least two lenses 02 receive sub-beams with different powers. For example, assuming the energy of the initial beam has a Gaussian distribution, the sub-beams located at the center of the initial beam have higher power, while the sub-beams located at the edges of the initial beam have lower power. For instance, sub-beam 1 has higher optical power, while sub-beams 2 and 3 both have lower optical power.

[0050] The power of the sub-beams received by the multiple lenses 02 may all be different, or there may be lenses 02 among the multiple lenses 02 that receive the same power of the sub-beams. This application embodiment does not limit this. This application embodiment takes as an example a lens 02 among the multiple lenses 02 that receives the same power of the sub-beams, for example... Figure 3 The power of sub-beam 1 received by the first lens 02 from top to bottom is the same as the power of sub-beam 3 received by the third lens 02, and the power of sub-beam 1 and sub-beam 3 is less than the power of sub-beam 2.

[0051] Each of the multiple lenses 02 is also used to map the received sub-beam into a target beam before outputting it to the light receiving unit 03. During the process of mapping the received sub-beam into the target beam, the lens 02 may converge or diverge the received sub-beam, and in this process, the lens 02 may also change the optical axis of the received sub-beam, for example, by deflecting the optical axis in a certain direction by a certain angle. Of course, during this process, the lens 02 may not necessarily change the beam shape of the received sub-beam; this embodiment of the application does not limit this.

[0052] It is understood that the function of lens 02 depends on the shape and size of lens 02. In the embodiments of this application, the shape and size of lens 02 can be reasonably set according to the function of lens 02. Figure 3 The shape of lens 02 is only shown schematically; of course, the shape of lens 02 can also be different. Figure 3 The shapes shown are different.

[0053] In this embodiment, the target beams output by the multiple lenses 02 overlap on the light receiving component 03. Each lens 02 outputs one target beam, and the multiple lenses 02 output multiple target beams in total. The centers of the multiple target beams are the same and the size of the beams are the same when they are transmitted to the light receiving component 03.

[0054] For example, Figure 3 The first lens 02, counting from top to bottom, maps the received sub-beam 1 to the target beam 1 as follows: Figure 4 As shown, Figure 3 The second lens 02 from the top maps the received sub-beam 2 to the target beam 2, as follows: Figure 5 As shown, Figure 3 The third lens 02 from the top maps the received sub-beam 3 to the target beam 3, as follows: Figure 6 As shown, from Figure 3 It can be seen that the light spots of target beams 1, 2, and 3 overlap on the light receiving component 03.

[0055] The process of multiple sub-beams in the initial beam being transmitted to multiple lenses 02 is equivalent to the "differentiation" of the beam, and the process of multiple target beams output by multiple lenses 02 coinciding with the light spot on the light receiving component 03 is equivalent to the "integration" of the beam.

[0056] As can be seen, the overall output beam of multiple lenses 02 includes the target beam mapped from each sub-beam of the initial beam. The optical power of this output beam at any position in the light spot on the optical receiving component is the sum of the powers of each sub-beam of the initial beam, making the optical power of the output beam at various positions in the light spot on the optical receiving component relatively consistent, and the energy distribution at various positions in the light spot relatively uniform. Therefore, the energy of the beam received by the optical receiving component is not Gaussian distributed. Consequently, the TDL and WDL of the beam received by the optical receiving component are not large, which solves the problem of large TDL and WDL of the beam when the energy of the beam is Gaussian distributed, as well as the problem of large system insertion loss of the beam.

[0057] Furthermore, since the lens 02 maps the received sub-beam to the target beam without filtering, the beam power reduction problem caused by filtering can be avoided. The solution provided in this application embodiment also eliminates the need for a temperature control component, thus avoiding the increased complexity associated with such a component.

[0058] Furthermore, since the optical power at various positions within the beam spot received by the optical receiving component is relatively uniform, the optical power at each position within the beam spot is high. Even if there is some deviation between the center of the beam spot received by the optical receiving component and a designated position within the optical receiving component, the component (or the component in combination with other components) can still process the beam to extract its signal. Therefore, the embodiments of this application have relatively low requirements for the collimation of the beam received by the optical receiving component, and a certain degree of error is allowed in the position of the center of the beam spot on the optical receiving component.

[0059] Optionally, the shape and size of the light spot on the light output component and the light spot on the light receiving component of the initial beam are the same. Therefore, although multiple lenses are added between the light output component and the light receiving component, it is not necessary to change the light receiving component (or the light receiving component and its subsequent components) to process multiple target beams. In this embodiment, the shape and size of the light spot of the initial beam and the light spot of the target beam are the same. Of course, the shape and / or size of the light spot of the initial beam and the light spot of the target beam can also be different, and this embodiment does not limit this.

[0060] Optionally, the wavelength range of the initial beam is 1520 nm to 1560 nm, or 1520 nm to 1629 nm. When the wavelength range of the initial beam is 1520 nm to 1560 nm, the initial beam is referred to as a C-band beam. When the wavelength range of the initial beam is 1520 nm to 1629 nm, the initial beam is referred to as a C+L band beam. Of course, the initial beam may not be a C-band or C+L band beam, and this application does not limit this.

[0061] It is understood that lens 02 is wavelength-dependent, and the lens has different effects on light of different wavelengths. According to the wavelength range of the initial beam, the material, shape and size of lens 02 can be reasonably selected so that lens 02 can have the function of lens 02 in the embodiment of this application (receiving sub-beams in the initial beam, and mapping the received sub-beams to the target beam and then outputting them to the light receiving component 03).

[0062] Optionally, at least one of the multiple lenses 02 is a spherical lens. For example, all of the multiple lenses 02 may be spherical lenses, or some of the multiple lenses 02 may be spherical lenses while others may not be spherical lenses. When a lens 02 is a spherical lens, both its incident surface and its exit surface are spherical, or its incident surface is spherical and its exit surface is planar, or its incident surface is planar and its exit surface is spherical.

[0063] In this embodiment, lens 02 may not be a spherical lens, but may be a cylindrical lens or a lens with a random shape (in this case, the lens may be referred to as a random particle).

[0064] Furthermore, the aforementioned multiple lenses 02 can be distributed in various ways, such as in a regular pattern or in a random pattern. When the multiple lenses 02 are distributed in a regular pattern, they can be symmetrically distributed about the optical axis (central axis) of the initial beam.

[0065] It is understandable that when the energy of the initial beam is Gaussian distributed, each sub-beam in the initial beam is symmetrically distributed about the optical axis of the initial beam. If the multiple lenses 02 are also symmetrically distributed about the optical axis, then the multiple lenses 02 can map each sub-beam of the initial beam to the output beam of the multiple lenses 02, thereby mapping the initial beam with Gaussian energy distribution to the output beam with energy that is not Gaussian distributed, making the multiple lenses 02 more suitable for scenarios where the energy of the initial beam is Gaussian distributed.

[0066] Alternatively, multiple lenses 02 can be arranged in an array, forming multiple rows and columns. In this case, the multiple lenses 02 can be distributed symmetrically about the optical axis of the initial beam or not symmetrically about the optical axis of the initial beam; this embodiment does not limit this. When multiple lenses 02 are arranged in an array, it facilitates the manufacture of multiple lenses. The material of the lenses 02 can be any material, such as glass, plastic, or a high-refractive-index material.

[0067] Optionally, at least one of the multiple lenses 02 has a micrometer-level size. For example, the largest size of the at least one lens 02 is a micrometer-level size. In this embodiment, it is taken that all multiple lenses 02 have micrometer-level sizes. Of course, it is also possible that some lenses 02 have micrometer-level sizes and other lenses 02 do not have micrometer-level sizes.

[0068] The aforementioned lenses 02 can be fabricated using processing techniques such as etching and nanoimprinting.

[0069] Please continue to refer to this. Figure 3 In this embodiment of the application, the adjacent lenses 02 are connected as an example. Optionally, the adjacent lenses 02 can also be distributed at intervals. This embodiment of the application does not limit this.

[0070] Alternatively, please refer to Figure 7 Based on the foregoing embodiments, the light processing device provided in this application further includes a plurality of antireflection films 04; the plurality of antireflection films 04 correspond one-to-one with a plurality of lenses 02, and the antireflection film 04 is attached to the side of the corresponding lens 02 near the light output component 01. Figure 7As shown, when multiple lenses 02 are connected together, multiple antireflective coatings 04 can also be connected together. When multiple lenses 02 are distributed at intervals, multiple antireflective coatings 04 can be connected together or spaced apart.

[0071] The antireflective coating 04 is used to improve the transmittance of the sub-beam received by the corresponding lens 02, thereby enabling more light in the sub-beam to be transmitted to the lens 02 and reducing the waste of light in the sub-beam.

[0072] Alternatively, please continue to refer to Figure 7 The light processing device also includes a transparent planar substrate 05 located between the light output component 01 and the light receiving component 03, and a plurality of lenses 02 located on the transparent planar substrate 05. Figure 7 Taking the example of multiple lenses 02 located between the light output component 01 and the transparent planar substrate 05, the embodiment of this application does not limit the specific location of the transparent planar substrate 05 between the light output component 01 and the multiple lenses 02.

[0073] When multiple lenses 02 are located between the light output component 01 and the transparent planar substrate 05, the light reflected back to the light output component 01 by the overall structure composed of multiple lenses 02 and the transparent planar substrate 05 in the initial beam can be reduced, thereby reducing the impact of this part of the light on the light output component 01.

[0074] Alternatively, the light processing apparatus may not include the transparent planar substrate 05, and this application embodiment does not limit this. The transparent planar substrate 05 may be transparent planar glass, transparent planar plastic, etc.

[0075] The light output component 01 in the above embodiments can be implemented in various ways. The following will illustrate the implementation of the light output component 01 through several examples.

[0076] Example 1: The optical processing device is an OPM (Optical Power Module). The OPM can detect parameters of the DWDM signal (such as power and / or frequency). Furthermore, the OPM can perform individual wavelength-by-wave analysis, enabling parameter monitoring of each channel wavelength. The OPM in Example 1 operates based on the principle of optical diffraction. The optical processing device also includes the aforementioned multiple lenses (optionally including the aforementioned antireflection coating and transparent planar substrate), the light output component is the collimator in the OPM, and the light receiving component is the folding mirror in the OPM.

[0077] like Figure 8 As shown, the OPM includes: a collimator, a folding mirror, a first relay lens, a grating, a second relay lens, a microelectromechanical system (MEMS) mirror, and a detector. These lenses are located between the collimator and the folding mirror. Please refer to [link / reference needed]. Figure 8 The collimator is connected to the input optical fiber ( Figure 8(Not shown in the image), the collimator receives a light beam from the input fiber and collimates it, outputting it as the initial beam to multiple lenses. Each lens receives a sub-beam from the initial beam and maps it to a target beam before outputting it to the folding mirror. The multiple target beams output from the multiple lenses overlap on the folding mirror. These target beams then sequentially pass through the folding mirror, the first relay lens, the grating, the second relay lens, the MEMS mirror, the second relay lens, the grating, the first relay lens, and the folding mirror, finally reaching the detector for signal parameter detection. Furthermore, the beam transmitted from the folding mirror to the detector does not pass through the aforementioned lenses.

[0078] Example 2: The light processing device is an OPM, which operates based on the principle of optical interference. The light processing device also includes the aforementioned multiple lenses (optionally including the aforementioned antireflective coating and transparent planar substrate), the light output component is the collimator in the OPM, and the light receiving component is the interference cavity in the OPM.

[0079] like Figure 9 As shown, the OPM in the optical processing device includes a collimator, an interferometer cavity, and a detector. The aforementioned lenses are located between the collimator and the interferometer cavity. Please refer to [reference needed]. Figure 9 The collimator is connected to the input optical fiber ( Figure 9 (Not shown in the image) The collimator receives a light beam from the input fiber and collimates it, outputting it as the initial beam to multiple lenses. Each lens receives a sub-beam from the initial beam and maps it to a target beam before outputting it to the interference cavity. The multiple target beams output from the multiple lenses overlap on the interference cavity, causing interference within the cavity. This allows light of a specific wavelength from the overlapping target beams to be transmitted to the detector, which can then detect signal parameters (such as power and / or frequency) of that wavelength.

[0080] Example 3: The optical output components are wavelength division multiplexers (WDM) (such as filter-type WDM), planar lightwave circuits (PLC) beam splitters, and arrayed waveguide gratings (AWG) beam splitters. The beams output by these devices are all the initial beams mentioned above.

[0081] Furthermore, the optical processing device provided in this application embodiment can be a passive device or an active device, and this application embodiment does not limit it in this regard.

[0082] In this application, the terms "first" and "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "at least one" refers to one or more, and "multiple" refers to two or more, unless otherwise expressly defined. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0083] It should be noted that the dimensions of some or all of the structures may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when a structure is referred to as being "on" another structure, it can be directly on that other structure, or there can be intermediate structures between the two structures. Additionally, it can be understood that when a structure is referred to as being "between" two structures, it can be the only structure between the two structures, or there can be more than one intermediate structure between the two structures. Similar reference numerals throughout indicate similar structures.

[0084] It should be noted that all signals involved in this application are authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant signals must comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0085] The above description is merely an exemplary embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A light processing device, characterized in that, include: Light output component, multiple lenses, and light receiving component; The optical output component is used to output an initial beam along a fixed optical path, the initial beam including multiple sub-beams; The plurality of lenses are distributed in a plane perpendicular to the fixed optical path. Each of the plurality of lenses is used to receive one of the sub-beams in the initial beam, and to map the received sub-beam into a target beam before outputting it to the light receiving component. The sub-beams received by different lenses are different, the power of the sub-beams received by at least two lenses is different, and the light spots of the multiple target beams output by the multiple lenses overlap on the light receiving component. The optical receiving component is used to receive multiple target beams.

2. The light processing apparatus according to claim 1, characterized in that, The plurality of lenses are symmetrically distributed about the optical axis of the initial beam.

3. The light processing apparatus according to claim 1 or 2, characterized in that, The multiple lens arrays are distributed.

4. The light processing apparatus according to claim 1, characterized in that, The multiple lenses are randomly distributed.

5. The light processing apparatus according to any one of claims 1 to 4, characterized in that, At least one of the plurality of lenses is a spherical lens.

6. The light processing apparatus according to any one of claims 1 to 5, characterized in that, The light processing device also includes multiple antireflection films; The plurality of antireflective films correspond one-to-one with the plurality of lenses, and the antireflective film is attached to the side of the corresponding lens near the light output component.

7. The light processing apparatus according to any one of claims 1 to 6, characterized in that, The light processing device further includes a transparent planar substrate located between the light output component and the light receiving component, and the plurality of lenses are located on the transparent planar substrate.

8. The light processing apparatus according to claim 7, characterized in that, The plurality of lenses are located between the light output component and the transparent planar substrate.

9. The light processing apparatus according to any one of claims 1 to 8, characterized in that, The shape and size of the light spot when the initial beam is output from the light output component and the light spot of the target beam on the light receiving component are the same.

10. The light processing apparatus according to any one of claims 1 to 9, characterized in that, At least one of the plurality of lenses has a micrometer-scale size.

11. The light processing apparatus according to any one of claims 1 to 10, characterized in that, The wavelength range of the initial beam is 1520 nm to 1560 nm, or 1520 nm to 1629 nm.

12. The light processing apparatus according to any one of claims 1 to 11, characterized in that, The optical processing device is an optical performance testing module (OPM), the optical output component is the collimator in the OPM, and the optical receiving component is the folding mirror in the OPM.

13. The light processing apparatus according to any one of claims 1 to 11, characterized in that, The optical processing device is an OPM, the optical output component is the collimator in the OPM, and the optical receiving component is the interference cavity in the OPM.

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