JP2011249985A - Optical communication device and optical communication apparatus with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical communication device and an optical communication apparatus with the same, capable of increasing transmission capacity.SOLUTION: An optical transmitting/receiving module 200 includes: a multi-core optical connector 15 connected with a plurality of optical fibers; a plurality of optical receiving sub-assemblies 81-90; a signal processing circuit 31; a driver 51; and an optical transmitting sub-assembly 61. The signal processing circuit 31 converts a parallel electrical signal input from the optical receiving sub-assemblies 81-90 into a time-series electrical signal and outputs the electrical signal to the driver 51. A transmission capacity per channel is increased because of conversion of the parallel electrical signal into the time-series electrical signal.

Description

  The present invention relates to an optical communication device and an optical communication device including the same.

  2. Description of the Related Art Conventionally, an optical communication device that converts a parallel electrical signal into a serial optical signal and performs communication is known.

JP 2002-208896 A

  By the way, the conventional optical communication device has a connector to which an electric signal wiring is connected, and exchanges an electric signal with a host device via this connector. However, in the connector, the high-frequency component of the electrical signal is likely to deteriorate, and the band of the usable electrical signal is limited. Therefore, the connector becomes a bottleneck, which may hinder the increase in the transmission capacity of the optical communication device. is there.

  The present invention has been made in view of the above circumstances, and has as its main object to provide an optical communication device capable of increasing the transmission capacity and an optical communication device including the same.

  In order to solve the above problems, an optical communication device of the present invention includes a connector to which a plurality of optical fibers are connected, a plurality of optical-electrical converters, an electrical signal processor, and an electrical-optical converter. . The plurality of optical-electrical converters convert a plurality of optical signals from the plurality of optical fibers into a plurality of electrical signals, respectively. The electrical signal processor converts a plurality of electrical signals from the plurality of photoelectric converters into a single electrical signal. The electro-optical converter converts an electric signal from the electric signal processor into an optical signal.

  The optical communication device of the present invention includes a connector to which a plurality of optical fibers are connected, a plurality of optical-electrical converters, an electrical signal processor, a plurality of electrical-optical converters, a multiplexer, Is provided. The plurality of optical-electrical converters convert a plurality of optical signals from the plurality of optical fibers into a plurality of electrical signals, respectively. The electrical signal processor converts a plurality of electrical signals from the plurality of photoelectric converters into a different number of electrical signals. The plurality of electrical-optical converters convert the plurality of electrical signals from the electrical signal processor into a plurality of optical signals, respectively. The multiplexer multiplexes and outputs a plurality of optical signals from the plurality of electro-optical converters.

  The optical communication device of the present invention also converts the optical communication device, a plurality of electrical circuits, and a plurality of electrical signals from the plurality of electrical circuits into a plurality of optical signals, and converts the plurality of optical signals into the plurality of optical signals. A plurality of converters that respectively output to the plurality of optical fibers connected to the connector.

  In order to solve the above problems, an optical communication device of the present invention includes an optical-electrical converter, an electrical signal processor, a plurality of electrical-optical converters, and a connector. The optical-electrical converter converts an optical signal into an electrical signal. The electric signal processor converts a single electric signal from the photoelectric converter into a plurality of electric signals. The plurality of electro-optical converters convert the plurality of electric signals from the electric signal processor into a plurality of optical signals, respectively. The connector is connected to a plurality of optical fibers to which a plurality of optical signals from the plurality of electro-optical converters are input.

  The optical communication device of the present invention includes a duplexer, a plurality of optical-electrical converters, an electrical signal processor, a plurality of electrical-optical converters, and a connector. The duplexer demultiplexes a plurality of optical signals included in the input light. The plurality of optical-electrical converters convert the plurality of optical signals from the duplexer into a plurality of electrical signals, respectively. The electrical signal processor converts the plurality of electrical signals from the plurality of photoelectric converters into different numbers of electrical signals. The plurality of electro-optical converters convert the plurality of electric signals from the electric signal processor into a plurality of optical signals, respectively. The connector is connected to a plurality of optical fibers to which a plurality of optical signals from the plurality of electro-optical converters are input.

  Further, the optical communication device of the present invention converts the optical communication device, the plurality of electrical circuits, and the plurality of optical signals from the plurality of optical fibers connected to the connector, respectively, into a plurality of electrical signals, A plurality of converters that respectively output a plurality of electrical signals to the plurality of electrical circuits.

  Since the optical communication device of the present invention exchanges optical signals with a host device via an optical fiber, the transmission capacity can be increased.

It is a block diagram showing the structure of an example of the optical communication device of this invention. It is a block diagram showing the structure of another example of the optical communication device of this invention. It is a block diagram showing the structure of an example of the optical communication apparatus of this invention. It is a block diagram showing the structure of the conventional optical communication device.

  Embodiments of an optical communication device and an optical communication device including the same according to the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an optical transceiver module 200 as an example of the optical communication device of the present invention. The optical transceiver module 200 includes a transmission side configuration shown in the upper half of the figure, a reception side configuration shown in the lower half of the figure, and a control circuit 35 that controls them. As a configuration on the transmission side, there are a multi-core optical connector 15, optical reception subassemblies 81 to 90, a signal processing circuit 31, a driver 51, an optical transmission subassembly 61, and an optical connector 11. As a configuration on the receiving side, there are an optical connector 12, an optical receiving subassembly 71, a signal processing circuit 32, drivers 91 to 100, optical transmitting subassemblies 101 to 110, and a multi-core optical connector 16.

[Sender configuration]
The multi-core optical connector 15 is an example of a connector. A plurality of multimode optical fibers extending from a circuit board (not shown) are detachably connected to the multicore optical connector 15. The multi-core optical connector 15 is also connected to a plurality of optical fibers connected to the optical receiving subassemblies 81 to 90, respectively. The multi-core optical connector 15 couples a plurality of multi-mode optical fibers extending from a circuit board (not shown) and a plurality of optical fibers respectively connected to the optical receiving subassemblies 81 to 90.

  The optical receiving subassemblies 81 to 90 are an example of a plurality of optical-electrical converters, and each include a photodiode. A plurality of optical fibers extending from the multi-core optical connector 15 are connected to the optical receiving subassemblies 81 to 90, respectively. In addition, a plurality of electrical signal wirings connected to the signal processing circuit 31 are also connected to the optical receiving subassemblies 81 to 90, respectively. The optical receiving subassemblies 81 to 90 convert a plurality of channels of optical signals input from a circuit board (not shown) through the multi-core optical connector 15 into the same number of channels of electrical signals, and these electrical signals. Is output to the signal processing circuit 31. In this example, 10-channel optical signals are input from a circuit board (not shown) to the optical receiving subassemblies 81 to 90 via the multi-core optical connector 15. The communication capacity of each channel is, for example, 10 Gbit / s. As the optical signal input to the optical receiving subassemblies 81 to 90, for example, light having a short wavelength (specifically, less than 1260 nm) such as an 850 nm band that is generally used for near field communication of 100 m or less is preferable.

  The signal processing circuit 31 is an example of an electric signal processor. The signal processing circuit 31 is connected to a plurality of electrical signal wirings extending from the optical receiving subassemblies 81 to 90. The signal processing circuit 31 is also connected with an electric signal wiring connected to the driver 51. The signal processing circuit 31 converts the parallel electrical signals input from the optical reception subassemblies 81 to 90 into time-series electrical signals and outputs these electrical signals to the driver 51. Here, since parallel electrical signals are converted into time-series electrical signals, the channel transmission capacity increases. In this example, the signal processing circuit 31 converts the 10-channel electrical signals input from the optical receiving subassemblies 81 to 90 into time-series electrical signals. In this case, the transmission capacity is 100 Gbit / s, for example.

  Electrical signal wiring extending from the signal processing circuit 31 is connected to the driver 51. The driver 51 is also connected with an electric signal wiring connected to the optical transmission subassembly 61. The driver 51 amplifies the electric signal input from the signal processing circuit 31 and biases it as necessary to drive the optical transmission subassembly.

  The optical transmission subassembly 61 is an example of an electro-optical converter, and includes an optical modulator. Electrical signal wiring extending from the driver 51 is connected to the optical transmission subassembly 61. The optical transmission subassembly 61 converts the time-series electrical signal input to the driver 51 into an optical signal. Examples of the optical signal output from the optical transmission subassembly 61 include a 1.3 μm band (specifically 1260 to 1360 nm) and a 1.5 μm band (specifically 1530 to 1565 nm) that are generally used for long-distance communication. ) Is preferable, but light having a short wavelength (specifically, less than 1260 nm) such as an 850 nm band may be used particularly when used for a short distance.

  To use an optical signal in the 1.3 μm band or 1.5 μm band, an external modulation type optical modulator such as a Mach-Zehnder optical modulator or an electroabsorption optical modulator is used for the optical transmission subassembly 61. Is preferred. When such an external modulation type optical modulator is used, a voltage drive type driver is applied as the driver 51. The external modulation type optical modulator is preferably an optical modulator using lithium niobate.

[Receiver configuration]
A single mode optical fiber (not shown) is detachably connected to the optical connector 12 from the outside. The optical connector 12 is also connected to one optical fiber connected to the optical receiving subassembly 71. The optical connector 12 couples an optical fiber (not shown) connected from the outside and an optical fiber connected to the optical reception subassembly 71. The transmission capacity of an optical signal input from the outside through a single mode optical fiber (not shown) connected to the optical connector 12 is, for example, 100 Gbit / s.

  The optical receiving subassembly 71 is an example of an optical-electrical converter, and includes a photodiode. Electrical signal wiring connected to the signal processing circuit 32 is also connected to the optical receiving subassembly 71. The optical receiving subassembly 71 converts the optical signal into an electrical signal and outputs the electrical signal to the signal processing circuit 32. Examples of the optical signal input to the optical receiving subassembly 71 include a 1.3 μm band (specifically 1260 to 1360 nm) and a 1.5 μm band (specifically 1530 to 1565 nm) that are generally used for long-distance communication. ) Is preferred. However, particularly when used for a short distance, light having a short wavelength (specifically, less than 1260 nm) such as an 850 nm band may be used. In this case, an optical fiber (not shown) connected to the optical connector 12 is a multimode optical fiber.

  The signal processing circuit 32 is an example of an electric signal processor. Electrical signal wiring extending from the optical receiving subassembly 71 is connected to the signal processing circuit 32. The signal processing circuit 32 is also connected to a plurality of electrical signal wirings connected to the drivers 91 to 100, respectively. The signal processing circuit 32 converts the electrical signals input from the optical receiving subassembly 71 into parallel electrical signals and outputs these electrical signals to the drivers 91 to 100, respectively. Here, the transmission capacity of each channel of the parallel signal is reduced by the time series signal converted into the parallel signal. In this example, the signal processing circuit 32 converts a time-series electric signal input from the optical receiving subassembly 71 into an electric signal of 10 channels. The transmission capacity of each channel is, for example, 10 Gbit / s.

  A plurality of electrical signal wirings extending from the signal processing circuit 32 are connected to the drivers 91 to 100, respectively. In addition, a plurality of electrical signal wirings connected to the optical transmission subassemblies 101 to 110 are also connected to the drivers 91 to 100, respectively. The drivers 91 to 100 amplify the electric signals of a plurality of channels input from the signal processing circuit 32 and bias them as necessary to drive the optical transmission subassemblies 101 to 110, respectively. In this example, 10-channel electrical signals are input from the signal processing circuit 32 to the drivers 91 to 100.

  The optical transmission subassemblies 101 to 110 are examples of a plurality of electro-optical converters, and each include an optical modulator. A plurality of electrical signals extending from the drivers 91 to 100 are connected to the optical transmission subassemblies 101 to 110, respectively. A plurality of multimode optical fibers connected to the multicore optical connector 16 are also connected to the optical transmission subassemblies 101 to 110, respectively. The optical transmission subassemblies 101 to 110 convert the electrical signals of the plurality of channels input to the drivers 91 to 100 into the same number of optical signals of the plurality of channels, and output these optical signals to the multi-core optical connector 16. To do. In this example, the optical transmission subassemblies 101 to 110 output optical signals of 10 channels. As the optical signals output from the optical transmission subassemblies 101 to 110, for example, light in a short wavelength band (specifically, less than 1260 nm) such as an 850 nm band that is generally used for near field communication of 100 m or less is preferable. .

  In order to use an optical signal in a short wavelength band such as the 850 nm band, it is preferable to use a direct current modulation type optical modulator for the optical transmission subassemblies 101 to 110. When such a direct current modulation type optical modulator is used, current drivers are applied as the drivers 91 to 100.

  The multi-core optical connector 16 is an example of a connector. A plurality of optical fibers extending from the optical transmission subassemblies 101 to 110 are connected to the multicore optical connector 16. The multi-core optical connector 16 is detachably connected with a plurality of multimode optical fibers connected to a circuit board (not shown). The multicore optical connector 16 couples a plurality of optical fibers extending from the optical transmission subassemblies 101 to 110 and a plurality of multimode optical fibers connected to a circuit board (not shown). The optical signals of a plurality of channels output from the optical transmission subassemblies 101 to 110 are output to a circuit board (not shown) through a plurality of multimode optical fibers connected to the multicore optical connector 16.

  The control circuit 35 is connected to electrical signal wirings connected to the signal processing circuits 31 and 32 and electrical signal wirings connected to the electrical connector 25. Although not shown, the control circuit 35 is also connected to electrical signal wirings connected to the optical transmission subassemblies 61 and 101 to 110, the drivers 51 and 91 to 100, and the optical reception subassemblies 71 and 81 to 90, respectively. Yes.

  FIG. 2 is a block diagram showing a configuration of an optical transceiver module 200 as another example of the optical communication device of the present invention. About the structure which overlaps with the said embodiment, detailed description is abbreviate | omitted by attaching | subjecting the same number.

[Sender configuration]
The signal processing circuit 31 is connected to a plurality of electrical signal wirings connected to the drivers 51 to 54, respectively. The signal processing circuit 31 converts the electrical signals of a plurality of channels input from the optical receiving subassemblies 81 to 90 into electrical signals of a smaller number of channels, and outputs these electrical signals to the drivers 51 to 54, respectively. To do. Here, as the number of channels decreases, the transmission capacity of each channel increases. In this example, the signal processing circuit 31 converts 10-channel electrical signals input from the optical receiving subassemblies 81 to 90 into 4-channel electrical signals. The transmission capacity of each channel is, for example, 25 Gbit / s.

  A plurality of electrical signal wires extending from the signal processing circuit 31 are connected to the drivers 51 to 54, respectively. In addition, a plurality of electric signal wirings connected to the optical transmission subassemblies 61 to 64 are also connected to the drivers 51 to 54, respectively. The drivers 51 to 54 amplify the electrical signals of a plurality of channels input from the signal processing circuit 31 and bias them as necessary to drive the optical transmission subassemblies 61 to 64, respectively. In this example, 4-channel electrical signals are input from the signal processing circuit 31 to the drivers 51 to 54.

  The optical transmission subassemblies 61 to 64 are an example of a plurality of electro-optical converters, and each include an optical modulator. A plurality of electrical signal wirings extending from the drivers 51 to 54 are connected to the optical transmission subassemblies 61 to 64, respectively. In addition, a plurality of optical fibers connected to the optical multiplexer 21 are also connected to the optical transmission subassemblies 61 to 64, respectively. The optical transmission subassemblies 61 to 64 convert the plurality of channels of electrical signals input to the drivers 51 to 54 into the same number of optical signals having different wavelengths from each other, and optically combine these optical signals. To the device 21. In this example, the optical transmission subassemblies 61 to 64 output four-channel optical signals having different wavelengths.

  The optical multiplexer 21 is an example of a multiplexer. A plurality of optical fibers extending from the optical transmission subassemblies 61 to 64 are connected to the optical multiplexer 21. In addition, one optical fiber connected to the optical connector 11 is also connected to the optical multiplexer 21. The optical multiplexer 21 multiplexes optical signals of a plurality of channels having different wavelengths input from the optical transmission subassemblies 61 to 64, and outputs a wavelength multiplexed signal obtained thereby to the optical connector 11. In this example, the wavelength multiplexed signal output from the optical multiplexer 21 is a 4-channel wavelength multiplexed signal. The transmission capacity of the wavelength multiplexed signal is, for example, 100 Gbit / s.

  One optical fiber extending from the optical multiplexer 21 is connected to the optical connector 11. A single mode optical fiber (not shown) is detachably connected to the optical connector 11 from the outside. The optical connector 11 couples an optical fiber extending from the optical multiplexer 21 and a single mode optical fiber (not shown) connected from the outside. The wavelength multiplexed signal output from the optical multiplexer 21 is output to the outside through a single mode optical fiber (not shown) connected to the optical connector 11.

[Receiver configuration]
One optical fiber connected to the optical demultiplexer 22 is also connected to the optical connector 12. The optical connector 12 couples a single mode optical fiber (not shown) connected from the outside and an optical fiber connected to the optical demultiplexer 22. A wavelength multiplexed signal input from the outside through a single mode optical fiber (not shown) connected to the optical connector 12 is input to the optical demultiplexer 22. In this example, the wavelength multiplexed signal input to the optical demultiplexer 22 is a 4-channel wavelength multiplexed signal. The transmission capacity of the wavelength multiplexed signal is, for example, 100 Gbit / s.

  The optical demultiplexer 22 is an example of a demultiplexer. One optical fiber extending from the optical connector 12 is connected to the optical demultiplexer 22. In addition, a plurality of optical fibers connected to the optical receiving subassemblies 71 to 74 are also connected to the optical demultiplexer 22. The optical demultiplexer 22 demultiplexes the wavelength multiplexed signal input from the optical connector 12 into optical signals of a plurality of channels having different wavelengths, and outputs these optical signals to the optical receiving subassemblies 71 to 74, respectively. In this example, the optical demultiplexer 22 demultiplexes the wavelength multiplexed signal input from the optical connector 12 into a 4-channel optical signal. The transmission capacity of each channel is, for example, 25 Gbit / s.

  The optical receiving subassemblies 71 to 74 are an example of a plurality of optical-electrical converters, and each include a photodiode. A plurality of optical fibers extending from the optical demultiplexer 22 are connected to the optical receiving subassemblies 71 to 74, respectively. In addition, a plurality of electrical signal wirings connected to the signal processing circuit 32 are also connected to the optical receiving subassemblies 71 to 74, respectively. The optical receiving subassemblies 71 to 74 convert the optical signals of a plurality of channels input from the optical demultiplexer 22 into the same number of electrical signals of a plurality of channels, and output these electrical signals to the signal processing circuit 32. . In this example, four-channel optical signals are input from the optical demultiplexer 22 to the optical receiving subassemblies 71 to 74.

  The signal processing circuit 32 is connected to a plurality of electrical signal wirings extending from the optical receiving subassemblies 71 to 74. The signal processing circuit 32 converts the electrical signals of a plurality of channels input from the optical receiving subassemblies 71 to 74 into electrical signals of a larger number of channels, and outputs these electrical signals to the drivers 91 to 100, respectively. To do. Here, as the number of channels increases, the transmission capacity of each channel decreases. In this example, the signal processing circuit 32 converts the 4-channel electrical signals input from the optical receiving subassemblies 71 to 74 into 10-channel electrical signals. The transmission capacity of each channel is, for example, 10 Gbit / s.

  The control circuit 35 is connected to electrical signal wirings connected to the signal processing circuits 31 and 32 and electrical signal wirings connected to the electrical connector 25. Although not shown, the control circuit 35 is connected to the optical transmission subassemblies 61 to 64 and 101 to 110, the drivers 51 to 54 and 91 to 100, and the optical reception subassemblies 71 to 74 and 81 to 90, respectively. Signal wiring is also connected.

  FIG. 4 is a block diagram showing a configuration of a conventional optical communication device. About the structure which overlaps with the said embodiment, detailed description is abbreviate | omitted by attaching | subjecting the same number. Conventionally, the signal processing circuits 31 and 32 and a circuit board (not shown) exchange electric signals via the electric connector 25. In the electrical connector 25, the high frequency component of the electrical signal is likely to deteriorate, and the band of the electrical signal to be used is limited. Therefore, the electrical connector 25 becomes a bottleneck, and the increase in the transmission capacity of the optical communication device may be inhibited. was there.

  FIG. 3 is a block diagram showing a configuration of an optical communication device 300 as an example of the optical communication device of the present invention. The optical communication device 300 includes a first circuit board 210 and a second circuit board 220. On the first circuit board 210, the optical transmission / reception module 200 is attached, and the control circuit 160 is mounted. The converters 111 to 120 and 131 to 140 and the integrated circuits 121 to 130 and 141 to 150 are mounted on the second circuit board 220.

  The control circuit 160 mounted on the first circuit board 210 is connected with an electric signal wiring connected to the optical transmission / reception module 200. The electrical signal output from the control circuit 160 is input to the control circuit 35 via the electrical connector 25 of the optical transceiver module 200 (see FIG. 1).

  Converters 111 to 120 mounted on second circuit board 220 each include a direct current modulation type optical modulator. A plurality of electrical signal lines extending from the integrated circuits 121 to 130 are connected to the converters 111 to 120, respectively. In addition, a plurality of optical fibers connected to the optical transceiver module 200 are connected to the converters 111 to 120, respectively. The converters 111 to 120 convert the plurality of channels of electrical signals output from the integrated circuits 121 to 130 into the same number of channels of optical signals and output these optical signals to the optical transceiver module 200. The optical signals output from the converters 111 to 120 are respectively input to the optical receiving subassemblies 81 to 90 via the multicore optical connector 15 of the optical transceiver module 200 (see FIG. 1).

  The converters 131 to 140 mounted on the second circuit board 220 each include a photodiode. A plurality of optical fibers extending from the optical transceiver module 200 are connected to the converters 131 to 140, respectively. In addition, electrical signal wirings connected to the integrated circuits 141 to 150 are connected to the converters 131 to 140, respectively. The converters 131 to 140 convert the optical signals of the plurality of channels output from the optical transceiver module 200 into the same number of electrical signals of the plurality of channels, and output these electrical signals to the integrated circuits 141 to 150, respectively. . The optical signals input to the converters 131 to 140 are output from the optical transmission subassemblies 101 to 110 of the optical transmission / reception module 200 via the multi-core optical connector 16 (see FIG. 1).

  According to this example, the optical transceiver module 200 is mounted on the first circuit board 210 different from the second circuit board 220 on which the converters 111 to 120 and 131 to 140 and the integrated circuits 121 to 130 and 141 to 150 are mounted. It is possible to attach. For this reason, it is possible to improve the freedom degree of arrangement of the configuration included in the optical communication device 300.

  That is, conventionally, an optical communication device and an integrated circuit for processing an electric signal are connected by an electric signal wiring. Therefore, in order to prevent deterioration of the electric signal, the optical communication device and the integrated circuit are close to each other in one circuit board. It was necessary to let them.

  On the other hand, in this example, since the optical transceiver module 200 and the integrated circuits 121 to 130 and 141 to 150 are connected via an optical fiber, the signal deterioration is less than that in the prior art. For this reason, it is not necessary for the optical transceiver module 200 and the integrated circuits 121 to 130 and 141 to 150 to be close to each other in one circuit board, and the optical transceiver module 200 is allocated to the first circuit board 210 and the second circuit board 220. Is possible.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art.

  In the above embodiment, an example of the wavelength multiplexing method has been described, but the method is not particularly limited as long as a plurality of optical signals can be multiplexed. For example, a phase multiplexing method or an amplitude multiplexing method may be used. These methods are collectively referred to as a coherent transmission method.

  11, 12 Optical connector, 15, 16 Multi-core optical connector (connector), 21 Optical multiplexer (multiplexer), 22 Optical demultiplexer (demultiplexer), 25 Electrical connector, 31, 32 Signal processing circuit (electrical) Signal processor), 35 control circuit, 51-54 driver, 61-64 optical transmission subassembly (electrical-optical converter), 71-74 optical reception subassembly (optical-electrical converter), 81-90 optical reception sub Assembly (optical-electrical converter), 91-100 driver, 101-110 optical transmission subassembly (electrical-optical converter), 111-120 converter, 121-130 integrated circuit, 131-140 converter, 141-150 Integrated circuit, 160 control circuit, 200 optical transceiver module, 210 first circuit board, 220 second circuit board, 300 optical communication device.

Claims (16)

A connector to which a plurality of optical fibers are connected;
A plurality of optical-electrical converters respectively converting a plurality of optical signals from the plurality of optical fibers into a plurality of electrical signals;
An electrical signal processor for converting a plurality of electrical signals from the plurality of photoelectric converters into a single electrical signal;
An electrical-to-optical converter that converts an electrical signal from the electrical signal processor into an optical signal;
An optical communication device comprising: A connector to which a plurality of optical fibers are connected;
A plurality of optical-electrical converters respectively converting a plurality of optical signals from the plurality of optical fibers into a plurality of electrical signals;
An electrical signal processor for converting a plurality of electrical signals from the plurality of photoelectric converters into a different number of electrical signals;
A plurality of electrical-to-optical converters respectively converting a plurality of electrical signals from the electrical signal processor into a plurality of optical signals;
A multiplexer that multiplexes and outputs a plurality of optical signals from the plurality of electro-optical converters;
An optical communication device comprising: The optical communication device according to claim 2,
The electrical signal processor converts a plurality of electrical signals from the plurality of opto-electrical converters into a smaller number of electrical signals;
An optical communication device. The optical communication device according to claim 1 or 2,
The electro-optical converter includes an external modulation type optical modulator and is voltage-driven by a driver.
An optical communication device. The optical communication device according to claim 1 or 2,
The electro-optical converter is an electroabsorption optical modulator.
An optical communication device. The optical communication device according to claim 1 or 2,
The electro-optical converter is a light modulator using lithium niobate.
An optical communication device. An optical-electrical converter that converts an input optical signal into an electrical signal;
An electrical signal processor for converting a single electrical signal from the photoelectric converter into a plurality of electrical signals;
A plurality of electrical-to-optical converters respectively converting a plurality of electrical signals from the electrical signal processor into a plurality of optical signals;
A connector to which a plurality of optical fibers to which a plurality of optical signals from the plurality of electro-optical converters are input are connected;
An optical communication device comprising: A duplexer that demultiplexes a plurality of optical signals included in the input light;
A plurality of optical-electrical converters that respectively convert a plurality of optical signals from the duplexer into a plurality of electrical signals;
An electrical signal processor for converting a plurality of electrical signals from the plurality of photoelectric converters into a different number of electrical signals;
A plurality of electrical-to-optical converters respectively converting a plurality of electrical signals from the electrical signal processor into a plurality of optical signals;
A connector to which a plurality of optical fibers to which a plurality of optical signals from the plurality of electro-optical converters are input are connected;
An optical communication device comprising: The optical communication device according to claim 8, wherein
The electrical signal processor converts a plurality of electrical signals from the plurality of optical-electrical converters into a larger number of electrical signals;
An optical communication device. The optical communication device according to claim 7 or 8,
Each of the electro-optical converters includes a direct modulation type optical modulator and is current-driven by a driver.
An optical communication device. A transmission-side connector to which a plurality of optical fibers are connected;
A plurality of transmission side optical-electrical converters that respectively convert a plurality of optical signals from the plurality of optical fibers into a plurality of electrical signals;
A transmission-side electrical signal processor that converts a plurality of electrical signals from the plurality of photoelectric converters into a different number of electrical signals;
A plurality of transmission-side electro-optical converters that respectively convert a plurality of electrical signals from the electrical signal processor into a plurality of optical signals;
A transmission side multiplexer that multiplexes and outputs a plurality of optical signals from the plurality of electro-optical converters;
A receiving-side duplexer that demultiplexes a plurality of optical signals included in the input light;
A plurality of receiving-side optical-electrical converters that respectively convert a plurality of optical signals from the duplexer into a plurality of electrical signals;
A receiving-side electrical signal processor that converts a plurality of electrical signals from the plurality of photoelectric converters into a different number of electrical signals;
A plurality of receiving-side electro-optical converters that respectively convert a plurality of electrical signals from the electrical signal processor into a plurality of optical signals;
A receiving-side connector to which a plurality of optical fibers to which a plurality of optical signals from the plurality of electro-optical converters are input are connected;
With
Each of the transmission-side electro-optical converters includes an external modulation type optical modulator, and is voltage-driven by a driver.
Each of the receiving-side electro-optical converters includes a direct modulation type optical modulator, and is current-driven by a driver.
An optical communication device. The optical communication device according to claim 2 or 8,
An optical communication device using a coherent transmission system. The optical communication device according to claim 2 or 8,
An optical communication device using a wavelength division multiplexing method. The optical communication device according to claim 1 or 2,
Multiple electrical circuits;
A plurality of converters that respectively convert a plurality of electrical signals from the plurality of electrical circuits into a plurality of optical signals and output the plurality of optical signals to the plurality of optical fibers connected to the connector;
An optical communication device comprising: An optical communication device according to claim 7 or 8,
Multiple electrical circuits;
A plurality of converters that respectively convert a plurality of optical signals from the plurality of optical fibers connected to the connector into a plurality of electrical signals, and output the plurality of electrical signals to the plurality of electrical circuits, respectively;
An optical communication device comprising: The optical communication device according to claim 14 or 15,
The optical communication device is attached to a circuit board different from a circuit board on which the plurality of electric circuits and the plurality of converters are mounted.
An optical communication device characterized by that.

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