WO2024047707A1 - Dispositif de traitement de signal optique - Google Patents

Dispositif de traitement de signal optique Download PDF

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Publication number
WO2024047707A1
WO2024047707A1 PCT/JP2022/032437 JP2022032437W WO2024047707A1 WO 2024047707 A1 WO2024047707 A1 WO 2024047707A1 JP 2022032437 W JP2022032437 W JP 2022032437W WO 2024047707 A1 WO2024047707 A1 WO 2024047707A1
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Prior art keywords
wavelength
awg
optical signal
input
processing device
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PCT/JP2022/032437
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English (en)
Japanese (ja)
Inventor
雅 太田
賢哉 鈴木
慶太 山口
毅伺 梅木
啓 渡邉
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日本電信電話株式会社
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Priority to PCT/JP2022/032437 priority Critical patent/WO2024047707A1/fr
Publication of WO2024047707A1 publication Critical patent/WO2024047707A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind

Definitions

  • the present disclosure relates to an optical signal processing device, and more specifically to an optical signal processing device having a plurality of arrayed waveguide gratings.
  • optical waveguide devices such as optical wavelength multiplexing/demultiplexing circuits and optical switch circuits that support this is being actively conducted.
  • Optical wavelength multiplexing and demultiplexing circuits are used for multiplexing and demultiplexing optical signals, and narrowing the guard band width, which determines the multiplexing and demultiplexing performance, is an important issue that determines the performance of optical communications.
  • tandem AWG A high-performance optical wavelength multiplexing/demultiplexing circuit that has a configuration in which two arrayed waveguide gratings (AWG) are connected in cascade is known (for example, a non-patent (See Reference 1).
  • the tandem AWG has the advantage of a narrow guard band, that is, a highly rectangular transmission spectrum characteristic.
  • tandem AWG samples the wavelength of light in a first AWG at narrow intervals, and by adjusting the input position of the second AWG, light of a desired wavelength is transmitted to an arbitrary output of the second AWG. It has a function. Therefore, the tandem AWG is effective as an optical wavelength division filter having narrow guard band width and highly rectangular transmission spectrum characteristics. Based on the principle of backward propagation of light, tandem AWGs are also effective as optical wavelength multiplexing filters.
  • the first AWG and the second AWG need to be connected through a connection circuit. Until the optical signal propagates from the output of the first AWG to the input of the second AWG via the connection circuit, it is necessary to maintain the phase difference of the optical waves in order to prevent deterioration of the interference characteristics.
  • the first AWG and the second AWG each include an array waveguide composed of a plurality of waveguides having different optical path lengths.
  • a connection circuit connecting the first AWG and the second AWG is also composed of a plurality of waveguides.
  • a tandem AWG including a first AWG, a second AWG, and a connection circuit, each of which is composed of a plurality of waveguides there is a path between the input of the first AWG and the output of the second AWG. There are many light paths of different lengths.
  • the phase error of light waves occurring in each of the first AWG, second AWG, and connection circuit deteriorates the interference characteristics in each of the first AWG, second AWG, and connection circuit. Deterioration of interference characteristics increases crosstalk noise, which is one of the optical characteristics of optical wavelength multiplexing/demultiplexing circuits, and becomes a factor that leads to deterioration of optical signal transmission quality.
  • the present disclosure has been made in view of such problems, and its purpose is to provide an optical signal processing device with low crosstalk noise.
  • an optical signal processing device includes at least one first input/output waveguide and a wavelength demultiplexer connected to the first input/output waveguide. a plurality of wavelength multiplexers, at least one second input/output waveguide connected to each of the plurality of wavelength multiplexers, a wavelength demultiplexer and a plurality of wavelength multiplexers; a connection circuit, the connection circuit includes a plurality of waveguides, one end of the plurality of waveguides in the connection circuit is connected to a wavelength demultiplexer, and the other end of the plurality of waveguides in the connection circuit is connected to a plurality of subsets.
  • the other end of one of the k-th subset (k is an integer of 2) of the plurality of subsets or the adjacent plurality of waveguides is connected to the k-th wavelength multiplexer of the plurality of wavelength multiplexers. connected to the wave generator.
  • FIG. 2 is a schematic configuration diagram showing a tandem AWG.
  • 1 is a schematic configuration diagram showing an optical signal processing device according to an embodiment of the present disclosure, in which (a) is a diagram showing the overall configuration, (b) is a diagram showing the configuration of a wavelength demultiplexer, and (c) is a diagram showing the configuration of a wavelength demultiplexer. It is a figure showing the composition of a wave device.
  • FIG. 2 is a diagram illustrating light input to a wavelength demultiplexer of an optical signal processing device according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating light propagating through a wavelength demultiplexer of an optical signal processing device according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating light propagating through a wavelength demultiplexer of an optical signal processing device according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating light input to a wavelength multiplexer of an optical signal processing device according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating light input to the wavelength multiplexer of the optical signal processing device according to an embodiment of the present disclosure, (a) is a diagram illustrating light input to the wavelength multiplexer, and (b) is a diagram illustrating light input to the wavelength multiplexer.
  • FIG. 2 is a diagram illustrating the transmission characteristics of a wavelength multiplexer.
  • FIG. 3 is a schematic configuration diagram showing a modified form of an optical signal processing device according to an embodiment of the present disclosure, in which (a) is a diagram showing the overall configuration, (b) is a diagram showing the configuration of a wavelength demultiplexer, (c) FIG. 2 is a diagram showing the configuration of a wavelength multiplexer.
  • FIG. 1 is a schematic configuration diagram showing a schematic configuration of a tandem AWG.
  • the tandem AWG 100 includes a first AWG 110, a second AWG 120, one input waveguide 111 connected to the input of the first AWG 110, and one input waveguide 111 connected to the output of the second AWG 120. It includes two output waveguides 121-1 and 121-2, and a connection circuit 130 that connects the output of the first AWG 110 and the input of the second AWG 120.
  • the tandem AWG 100 wavelength-demultiplexes a wavelength-multiplexed signal input via an input waveguide 111, and sends an optical signal with a wavelength ⁇ 1 and an optical signal with a wavelength ⁇ 2 included in the wavelength-multiplexed signal to two output waveguides. It is configured to output from each of 121-1 and 121-2.
  • the first AWG 110 receives a wavelength-multiplexed signal (an optical signal with a wavelength ⁇ 1 and an optical signal with a wavelength ⁇ 2) inputted via the input waveguide 111, and separates the wavelength-multiplexed signal (an optical signal with a wavelength ⁇ 1 and an optical signal with a wavelength ⁇ 2 ) into different wavelengths of the first AWG 110 depending on the wavelength. It is configured to be split into different positions.
  • the second AWG 120 is configured to multiplex lights of the same wavelength out of a plurality of input wavelengths at different positions of the second AWG 120 depending on the wavelength.
  • One end of the plurality of waveguides constituting the connection circuit 130 is connected to a position of the first AWG 110 where the optical signal of wavelength ⁇ 1 and the optical signal of wavelength ⁇ 2 are demultiplexed.
  • the other ends of the plurality of waveguides constituting the connection circuit 130 are provided with a gap for separating the position of the second AWG 120 where the optical signal of wavelength ⁇ 1 is inputted and the position where the optical signal of wavelength ⁇ 2 is inputted. and is connected to the second AWG 120.
  • the two output waveguides 121-1 and 121-2 are each connected to a position where the light from the second AWG 120 is multiplexed.
  • an optical signal with a wavelength ⁇ 1 and an optical signal with a wavelength ⁇ 2 are each demultiplexed to different positions of the first AWG 110.
  • the optical signal with wavelength ⁇ 1 is branched to a position above the first AWG 110, and coupled to a waveguide connected to the first AWG 110 at that position among the plurality of waveguides forming the connection circuit 130.
  • the signal propagates to the second AWG 120.
  • the optical signal with wavelength ⁇ 2 is branched to a position below the first AWG 110 and coupled to a waveguide connected to the first AWG 110 at that position among the plurality of waveguides forming the connection circuit 130. and propagates to the second AWG 120.
  • the optical signal of wavelength ⁇ 1 and the optical signal of wavelength ⁇ 2 input to different positions of the second AWG 120 are multiplexed to different positions of the second AWG 120, respectively.
  • the optical signals of wavelength ⁇ 1 are multiplexed at a position above the second AWG 120, and coupled to the output waveguide 121-1 connected to the second AWG 120 at this position and output.
  • the optical signals of wavelength ⁇ 2 are multiplexed at a position below the second AWG 120, and coupled to the output waveguide 121-2 connected to the second AWG 120 at that position and output.
  • the tandem AWG 100 configured as described above samples the wavelength of light at narrow intervals in the first AWG 110 and adjusts the input position of the second AWG 120 to send light of a desired wavelength to an arbitrary position of the second AWG 120. It has the function of transmitting.
  • the gap of the waveguide forming the connection circuit 130 at the connection position with the second AWG 120 corresponds to a guard band.
  • the tandem AWG 100 by increasing the resolution of the first AWG 110, a highly rectangular transmission spectrum characteristic with a narrow guard band width can be achieved.
  • the reduction of the guard band is accompanied by an increase in crosstalk noise, which becomes a factor that leads to deterioration of the transmission quality of optical signals.
  • An optical signal processing device includes a first AWG that configures a wavelength demultiplexer, a plurality of second AWGs that configure a plurality of wavelength multiplexers, a wavelength demultiplexer, and a plurality of second AWGs that configure a wavelength demultiplexer. and a connection circuit for connecting the wavelength multiplexer.
  • the connection circuit includes a plurality of waveguides. One end of the plurality of waveguides in the connection circuit is connected to the output of the wavelength demultiplexer.
  • the other ends of the plurality of waveguides in the connection circuit are divided into a plurality of subsets, and the other ends of one of the k-th (k is an integer of 2) subset or the adjacent plurality of waveguides are divided into a plurality of subsets. It is connected to the input of the k-th wavelength multiplexer among the wavelength multiplexers. According to one embodiment of the present disclosure, an optical signal processing device with low crosstalk noise is provided.
  • FIG. 2(a) is a diagram showing the overall configuration of the optical signal processing device 200.
  • the optical signal processing device 200 includes a first AWG 210 that constitutes a wavelength demultiplexer, and two second AWGs 220-1 and 220-1 that constitute two wavelength multiplexers. , one input waveguide 111 connected to the input of the first AWG 110, one output waveguide 221-1 connected to the output of the second AWG 120-1, and the other second AWG 120-2. and a connection circuit 230 that connects the output of the first AWG 110 and the input of each of the two second AWGs 220-1 and 220-2.
  • the optical signal processing device 200 wavelength-demultiplexes the wavelength-multiplexed signal input via the input waveguide 111, and generates light with wavelength ⁇ 1 included in the wavelength-multiplexed signal. It is configured to output a signal and an optical signal of wavelength ⁇ 2 from two output waveguides 221-1 and 221-2, respectively.
  • the optical signal processing device 200 can also combine the input optical signal with wavelength ⁇ 1 and the optical signal with wavelength ⁇ 2 and output a wavelength multiplexed signal. That is, the input waveguide 111 and the output waveguides 221-1 and 221-2 each constitute an input/output waveguide. Further, the AWGs 210 and 220 constitute a wavelength multiplexer.
  • FIG. 2(b) is a diagram showing the configuration of the first AWG 210 that constitutes the wavelength demultiplexer.
  • the AWG 210 includes a first slab 210a, an arrayed waveguide 210b, and a second slab 210c.
  • the array waveguide 210b is composed of a plurality of waveguides having different waveguide lengths.
  • the array waveguide 210b is connected to the output side termination surface of the first slab 210a and the input side termination surface of the second slab 210c.
  • An input waveguide 111 is connected to the input side termination surface of the first slab 210a.
  • a connection circuit 230 is connected to the output side termination surface of the second slab 210c.
  • FIG. 2(c) is a diagram showing the configuration of the second AWG 220 (220-1 or 220-2) that constitutes the wavelength multiplexer.
  • the AWG 220 includes a first slab 220a, an arrayed waveguide 220b, and a second slab 220c.
  • the array waveguide 220b is composed of a plurality of waveguides having different waveguide lengths.
  • the array waveguide 220b is connected to the output side termination surface of the first slab 220a and the input side termination surface of the second slab 220c.
  • a connection circuit 230 is connected to the input-side termination surface of the first slab 220a.
  • An output waveguide 221 is connected to the output side termination surface of the second slab 210c.
  • the first AWG 210 converts the wavelength-multiplexed signal (the optical signal with the wavelength ⁇ 1 and the optical signal with the wavelength ⁇ 2 ) inputted via the input waveguide 111 into the first AWG 210 according to the wavelength.
  • the signal is configured to be split into different positions of the AWG 210.
  • Each of the two second AWGs 220-1 and 220-2 is configured to multiplex input lights of the same wavelength.
  • the second AWG 220 differs from the AWG 120 in FIG. 1 in that it inputs and multiplexes light with the same wavelength and multiplexes the lights with the same wavelength.
  • the free spectral range (FSR) of the second AWG 220, into which light of one wavelength is input/output, is greater than the FSR of the first AWG 210, into which light of multiple wavelengths is input/output, and the second AWG 120 in FIG. can also be made smaller.
  • the plurality of waveguides making up the connection circuit 230 are divided into two subsets. Each subset includes one or more adjacent waveguides.
  • the upper side of the connection circuit 230 in FIG. 2A is a subset 1, and the lower side is a subset 2.
  • One end of the waveguide in subset 1 is connected to a position in the first AWG 210 where the optical signal of wavelength ⁇ 1 is demultiplexed (a position above the output side end face of the second slab 210c).
  • One end of the waveguide in subset 2 is connected to a position in the first AWG 210 where the optical signal of wavelength ⁇ 2 is demultiplexed (a position below the output side end face of the second slab 210c).
  • the other end of the waveguide in subset 1 is connected to the second AWG 220-1 (the end face on the input side of the first slab 220a).
  • the other end of the waveguide in subset 2 is connected to the second AWG 220-2 (the end face on the input side of the first slab 220a).
  • FIG. 3 is a diagram showing the intensity distribution of the optical signal at the boundary between the first slab 210a and the input waveguide 111.
  • the position of the first slab 210a to which the input waveguide 111 is connected is defined as x0 .
  • the intensity distribution shown in FIG. 3 is that of monochromatic light.
  • FIG. 4 is a diagram showing the intensity distribution of the optical signal at the boundary between the first slab 210a and the arrayed waveguide 210b.
  • the array waveguide 210b is connected to the position of the first slab 210a where the intensity of the optical signal shown in dark color in FIG. 4 appears.
  • a plurality of optical signals with a wavelength ⁇ 1 input to the second slab 210c via a plurality of waveguides having different waveguide lengths constituting the array waveguide 210b are transmitted through the waveguides through which they propagated. It has different phases depending on its length.
  • the plurality of optical signals of wavelength ⁇ 2 input to the second slab 210c also have a phase depending on the length of the waveguide through which they propagate.
  • the optical signals of each wavelength input to the first AWG 210 are multiplexed at a position according to the wavelength. Specifically, optical signals of wavelength ⁇ 1 interfere with each other, are combined, and appear above the AWG 210 (second slab 210c).
  • One or more waveguides of subset 1 of connection circuit 230 are connected to the position where the optical signal of wavelength ⁇ 1 appears.
  • one or more waveguides of subset 2 of connection circuit 230 are connected to the position where the optical signal of wavelength ⁇ 2 appears.
  • FIG. 5 is a diagram showing the transmission loss at the boundary between the second slab 210c of the first AWG 210 and the connection circuit 230.
  • crosstalk noise occurs due to the phase error occurring in the first AWG 210. Therefore, it is desirable to configure the connection circuit 230 so that the waveguide forming the connection circuit 230 is not connected to a position where the crosstalk of the second slab 210c is high. As a result, crosstalk occurring between subset 1 and subset 2 of connection circuit 230 is reduced compared to the case where no subset is provided.
  • This is the optical signal intensity distribution of subset k of connection circuit 230 when an optical signal of a wavelength different from ⁇ k is coupled to any one waveguide in subset k of ⁇ k .
  • Each broken line in FIG. 6 corresponds to each waveguide included in subset k.
  • the crosstalk noise within subset k of connection circuit 230 is approximately ⁇ 40 dB.
  • the peak intensity of the optical signal at ⁇ 1 is approximately -40 dB.
  • FIG. 7B is a diagram showing the transmission loss at the boundary between the second slab 210c of the second AWG 220-2 and the waveguide of the subset 2 of the connection circuit 230. It can be seen that the crosstalk of connection circuit 230 to subset 2 is ⁇ 80 db or less.
  • the optical signal with the wavelength ⁇ 1 and the optical signal with the wavelength ⁇ 2 are each demultiplexed to different positions of the first AWG 210 (second slab 210c).
  • the optical signal of wavelength ⁇ 1 is branched to the upper position of the first AWG 210 (second slab 210c), and connected to the first AWG 210 at that position among the plurality of waveguides that constitute the connection circuit 230.
  • the signal is coupled to the waveguide of Subset 1 and propagated to the second AWG 220-1.
  • the optical signal of wavelength ⁇ 2 is branched to a position below the first AWG 210 (second slab 210c), and connected to the first AWG 110 at the corresponding position among the plurality of waveguides forming the connection circuit 130.
  • the signal is coupled to the waveguide of Subset 2 and propagated to the second AWG 120.
  • the plurality of waveguides constituting the connection circuit 230 have the same length or have an optical wave length difference that is an integral multiple of the wavelength of the propagating optical signal. This maintains the phase difference of the light waves and prevents deterioration of the interference characteristics in the first AGW.
  • the spacing between adjacent waveguides constituting the connection circuit 230 may or may not be constant. For example, when demultiplexing wavelength ⁇ 1 in the C wavelength band and wavelength ⁇ 2 in the L wavelength band from a wavelength multiplexed signal, the distance between adjacent waveguides in subset 1 of the connection circuit 230 and the distance between adjacent waveguides in subset 2 The intervals between the two can be made different.
  • the first AWG 210 has the function of branching the input optical signal to different positions depending on the wavelength, but also has the function of branching the optical signal to different positions depending on the input position. has.
  • the wavelength of the optical signal propagated through the subsets 1 and 2 of the connection circuit 230 and input to the second AWGs 220-1 and 220-2 changes.
  • the position where the optical signals are multiplexed in the second AWGs 220-1 and 220-2 also changes. Therefore, the optical signal processing device 200 may have a configuration in which a plurality of input waveguides are connected to the first AWG 210 and a plurality of output waveguides are connected to each of the second AWGs 220-1 and 220-2.
  • the first AWG 210, the connection circuit 230, and the second AGW 220 may be configured on the same planar lightwave circuit (PLC), or the first AWG 210 and the second AWG 220 may be configured on the same planar lightwave circuit (PLC).
  • Two AGWs 220 may be connected by a connection circuit 230.
  • the material of the light wave circuit constituting the first AWG 210 and the second AGW 220 of this embodiment can be silicon oxide (SiO 2 ), which has low connection loss with an optical fiber.
  • silicon (Si) which can reduce the circuit area, may be used, or silicon nitride (Si 3 N 4 ), which has performance between silicon oxide and silicon, may be used.
  • a wavelength multiplexed signal input through the input waveguide 111 is wavelength-demultiplexed, and two optical signals of wavelength ⁇ 1 and wavelength ⁇ 2 included in the wavelength multiplexed signal are separated into two optical signals.
  • the optical signal processing device 200 is configured to output from the output waveguides 221-1 and 221-2, respectively. It is also possible to configure an optical signal processing device configured to output.
  • the optical signal processing device of this modification is configured to output optical signals of three or more different wavelengths from a wavelength multiplexed signal from three or more output waveguides.
  • FIG. 8(a) is a diagram showing the overall configuration of an optical signal processing device 800.
  • the optical signal processing device 800 includes a first AWG 810 that constitutes a wavelength demultiplexer, and a second AWG 810 that constitutes k (k is an integer of 3 or more) wavelength multiplexers.
  • AWG820-1, 820-2,...820-k one input waveguide 111 connected to the input of the first AWG810, and the output connected to the output of the kth second AWG820-k.
  • It includes a waveguide 821-k and a connection circuit 830 that connects the output of the first AWG 110 and the input of each of the k second AWGs 820-1, 820-2, . . . 820-k.
  • the optical signal processing device 800 like the optical signal processing device 200 shown in FIG. It is configured to output optical signals having wavelengths ⁇ k to ⁇ k from k output waveguides 221-1 to 221-k, respectively.
  • the optical signal processing device 800 multiplexes an optical signal of wavelength ⁇ k from an input optical signal of wavelength ⁇ 1 to generate a wavelength multiplexed signal. It can also be output. That is, the input waveguide 111 and the output waveguides 821-1 to 821-k each constitute an input/output waveguide. Further, AWGs 810 and 820-1 to 820-k constitute a wavelength multiplexer.
  • FIG. 8(b) is a diagram showing the configuration of the first AWG 810 that constitutes the wavelength demultiplexer. Similar to the first AWG 210 shown in FIG. 2(b), the first AWG 810 includes a first slab 810a, an arrayed waveguide 810b, and a second slab 810c.
  • the array waveguide 210b is composed of a plurality of waveguides having different waveguide lengths.
  • the array waveguide 810b is connected to the output side termination surface of the first slab 810a and the input side termination surface of the second slab 810c.
  • An input waveguide 111 is connected to the input side termination surface of the first slab 810a.
  • Subsets 1 to k of the connection circuit 830 are connected to the output end surface of the second slab 810c.
  • FIG. 8(c) is a diagram showing the configuration of the second AWG 820 (820-1 to 820-k) that constitutes the wavelength multiplexer.
  • the AWG 820 includes a first slab 820a, an arrayed waveguide 820b, and a second slab 820c.
  • the array waveguide 820b is composed of a plurality of waveguides having different waveguide lengths.
  • the array waveguide 820b is connected to the output side termination surface of the first slab 820a and the input side termination surface of the second slab 820c.
  • a subset k of the connection circuit 830 is connected to the input side termination surface of the first slab 820a of the second AWG 820-k.
  • An output waveguide 221-k is connected to the output side termination surface of the second slab 810c of the second AWG 820-k.
  • the first AWG 810 has the function of branching the input optical signal to different positions depending on the wavelength, but at the same time, the first AWG 810 has the function of branching the input optical signal to different positions depending on the input position. has.
  • the wavelength of the optical signal propagated through subset 1 to k of the connection circuit 830 and input to the second AWGs 820-1 to 820-k changes.
  • the position where the optical signal is multiplexed in the second AWGs 820-1 to 820-k also changes. Therefore, the optical signal processing device 800 may have a configuration in which a plurality of input waveguides are connected to the first AWG 810 and a plurality of output waveguides are connected to each of the second AWGs 820-1 to 820-k.
  • the AWG 810, AWG 820, connection circuit 830, and output waveguide 821 in the optical signal processing device 800 correspond to the AWG 210, AWG 220, connection circuit 230, and output waveguide 221 in the optical signal processing device 200 described above, so detailed explanations will be given below. The explanation will be omitted.
  • the wavelength ⁇ 1 to wavelength ⁇ k in the description of this modification is expanded from the wavelength band ⁇ 1 to the wavelength band ⁇ k , and a plurality of wavelengths (wavelengths ⁇ 1- 1 , ⁇ 1-2 , ...), multiple wavelengths included in the wavelength band ⁇ 2 (wavelengths ⁇ 2-1 , ⁇ 2-2 , ...), ... multiple wavelengths included in the wavelength band ⁇ k
  • the optical signal processing device may be configured to output wavelengths (wavelengths ⁇ k-1 , ⁇ k-2 , . . . ) from a plurality of output waveguides, respectively.

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  • Microelectronics & Electronic Packaging (AREA)
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  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

L'invention concerne un dispositif de traitement de signal optique ayant une faible diaphonie. Un dispositif de traitement de signal optique selon un mode de réalisation de la présente divulgation comprend : au moins un premier guide d'ondes d'entrée-sortie ; un démultiplexeur de longueur d'onde qui est connecté au premier guide d'ondes d'entrée-sortie ; une pluralité de multiplexeurs de longueur d'onde ; au moins un second guide d'ondes d'entrée-sortie qui est connecté à chacun de la pluralité de multiplexeurs de longueur d'onde ; et un circuit de connexion qui connecte le démultiplexeur de longueur d'onde et la pluralité de multiplexeurs de longueur d'onde. Le circuit de connexion comprend une pluralité de guides d'ondes. Une extrémité de chacun de la pluralité de guides d'ondes dans le circuit de connexion est connectée au démultiplexeur de longueur d'onde. Les autres extrémités de la pluralité de guides d'ondes dans le circuit de connexion sont divisées en une pluralité de sous-ensembles. L'autre extrémité d'un ou de plusieurs guides d'ondes adjacents dans un k-ième (k étant le nombre entier 2) sous-ensemble parmi la pluralité de sous-ensembles est connectée au k-ième multiplexeur de longueur d'onde parmi la pluralité de multiplexeurs de longueur d'onde.
PCT/JP2022/032437 2022-08-29 2022-08-29 Dispositif de traitement de signal optique WO2024047707A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000111751A (ja) * 1998-08-04 2000-04-21 Nippon Telegr & Teleph Corp <Ntt> 波長分波器、光スペクトラムアナライザおよび光バンドパスフィルタ
JP2002280967A (ja) * 2001-03-15 2002-09-27 Fujitsu Ltd 光デバイス及びこれを用いる波長多重通信システム
US6529649B1 (en) * 2000-05-01 2003-03-04 Lucent Technologies Inc. Optical filter with improved crosstalk rejection
US6754410B1 (en) * 2003-05-29 2004-06-22 Lucent Technologies Inc. Integrated wavelength-selective cross connect
JP2019101315A (ja) * 2017-12-06 2019-06-24 Ｎｔｔエレクトロニクス株式会社 光波長合分波器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000111751A (ja) * 1998-08-04 2000-04-21 Nippon Telegr & Teleph Corp <Ntt> 波長分波器、光スペクトラムアナライザおよび光バンドパスフィルタ
US6529649B1 (en) * 2000-05-01 2003-03-04 Lucent Technologies Inc. Optical filter with improved crosstalk rejection
JP2002280967A (ja) * 2001-03-15 2002-09-27 Fujitsu Ltd 光デバイス及びこれを用いる波長多重通信システム
US6754410B1 (en) * 2003-05-29 2004-06-22 Lucent Technologies Inc. Integrated wavelength-selective cross connect
JP2019101315A (ja) * 2017-12-06 2019-06-24 Ｎｔｔエレクトロニクス株式会社 光波長合分波器

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