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Optical device and optical signal processing method

A technology of optical signals and optical devices, applied in the field of communication, can solve problems such as carrier leakage and low output signal quality, and achieve the effect of improving quality

Active Publication Date: 2021-07-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above optical frequency shifter adopts two-channel output technology. Due to the extinction ratio of the MZ modulator and the control of the bias point, there may be carrier leakage in the two channels, resulting in the problem of low quality of the output signal.

Method used

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  • Optical device and optical signal processing method
  • Optical device and optical signal processing method
  • Optical device and optical signal processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] figure 1 It is a schematic structural diagram of an optical device provided in Embodiment 1 of the present application. The optical device may be a multi-carrier generator, modulator, transmitter or receiver, etc., which is not limited in the present application. The optical device includes: a first splitter 101, a first MZ modulator 102, a second MZ modulator 103, a first optical coupler 104, a power regulator 105, a phase shifter 106, a second splitter 107, a second The optical coupler 108 and the third optical coupler 109, these devices each have at least one input terminal and at least one output terminal.

[0103]The input end of the first spectroscopic part 101 is used to obtain the light source generated by the laser. Multiple output terminals of the first splitter 101 are respectively connected to the input terminal of the first MZ modulator 102 , the input terminal of the second MZ modulator 103 and the input terminal of the power conditioner 105 . The output...

Embodiment 2

[0115] On the basis of Embodiment 1, further, the optical device may be a multi-carrier generator, modulator, or transmitter, specifically, figure 2 It is a schematic structural diagram of an optical device provided in Embodiment 2 of the present application, and the optical device further includes a first modulator 110 , a second modulator 111 and a fourth optical coupler 112 . Optionally, the optical device further includes a first amplifier 113 and a second amplifier 114 . Each device included in the optical device has at least one input terminal and at least one output terminal respectively. The output end of the second optocoupler 108 is connected with the input end of the first amplifier 113, the output end of the first amplifier 113 is connected with the input end of the first modulator 110, the output end of the third optocoupler 109 is connected with the second amplifier 114 input end is connected, the output end of the second amplifier 114 is connected with the inp...

Embodiment 3

[0120] On the basis of Embodiment 1, the optical device may be a multi-carrier generator, modulator, or transmitter. specifically, image 3 It is a schematic structural diagram of the optical device provided in Embodiment 3 of the present application. The at least three optical signals formed by the first optical splitter 101 also include: a fourteenth optical signal. Based on this, the optical device further includes a third modulator 115 , the fourth modulator 116 , the fifth modulator 117 and the fifth optical coupler 118 . Optionally, the optical device further includes a third amplifier 119 and a fourth amplifier 120 . Each device included in the optical device has at least one input terminal and at least one output terminal respectively. The output end of the second optocoupler 108 is connected with the input end of the third amplifier 119, the output end of the third amplifier 119 is connected with the input end of the third modulator 115, the output end of the third ...

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Abstract

The present application provides an optical device and an optical signal processing method. The first optical splitter splits the light source to obtain the first optical signal, the second optical signal and the third optical signal; the first MZ modulator drives the first optical signal according to the first clock signal. The optical signal is used to modulate the first optical signal, and output the fourth optical signal; the second MZ modulator drives the second optical signal according to the second clock signal to modulate the second optical signal, and output the fifth optical signal; The four optical signals are coupled with the fifth optical signal, and the sixth optical signal and the seventh optical signal are output; the power regulator and the phase shifter perform power adjustment and phase shift on the third optical signal, and output the eighth optical signal; the second optical splitter The eighth optical signal is divided into the ninth optical signal and the tenth optical signal; the second optical coupler combines the sixth optical signal and the ninth optical signal to cancel the residual signal of the sixth optical signal; the third optical coupler The seventh optical signal and the tenth optical signal are combined to cancel the residual signal of the seventh optical signal. To improve the quality of the output signal.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to an optical device and an optical signal processing method. Background technique [0002] With the continuous development of communication technology, the communication system requires higher and higher transmission bandwidth and capacity in optical fiber transmission technology. In order to meet the bandwidth and capacity requirements, multi-channel transmission technology emerges as the times require. [0003] For example: the prior art provides an optical frequency shifter, comprising: an input port; an optical coupler with one input and two outputs connected to the one input port; Two Mach Zehnder (MZ) modulators optically connected to each output, two optical couplers with two inputs and two outputs optically connected to the respective outputs of the two MZ modulators, and two inputs and two outputs connected to the two inputs and two outputs The two ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/80H04Q11/00
CPCH04B10/802H04Q11/0005H04Q2011/0015H04Q2011/0049G02F1/21G02F1/212H04B10/80H04Q11/00H04L7/0075
Inventor 卢彦兆王勰李良川邓舒鹏
Owner HUAWEI TECH CO LTD