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Carrier-suppression single side band electro-optical modulation device

An electro-optical modulation and carrier suppression technology, applied in the field of communication, can solve the problems of large design area, large occupied area, and large power consumption

Pending Publication Date: 2018-10-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional phase-shifting SSB modulation technology is mainly realized by using the Mach-Zehnder modulator, relatively speaking, it occupies a large area and consumes a lot of power
For optical communication and interconnection systems that require multiple SSB modulation subsystems, the use of Mach-Zehnder modulators requires a larger design area and greater power consumption

Method used

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  • Carrier-suppression single side band electro-optical modulation device
  • Carrier-suppression single side band electro-optical modulation device
  • Carrier-suppression single side band electro-optical modulation device

Examples

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Embodiment Construction

[0019] Such as figure 1 As shown, this embodiment includes: a first coupler 1, a second coupler 2, a first optical splitter 3, a second optical splitter 4, a third optical splitter 5, a first microring modulator 9, a second microring Modulator 10, third microring modulator 11, fourth microring modulator 12, first phase shifter 13, second phase shifter 14, third phase shifter 15, first beam combiner 8, second The beam combiner 6 and the third beam combiner 7, wherein: the laser output optical carrier is coupled to the silicon waveguide through the first coupler 1, the output end of the first coupler 1 is connected to the input end of the first optical splitter 3, and the first The output end of the optical splitter 3 is connected with the input end of the second optical splitter 4 and the input end of the third optical splitter 5 respectively, and the output end of the second optical splitter 4 is respectively connected with the input end of the first phase shifter 13 and the f...

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Abstract

A carrier-suppression single side band electro-optical modulation device comprises a first coupler, a second coupler, a first light splitter, a second light splitter, a third light splitter, a first micro-ring modulator, a second micro-ring modulator, a third micro-ring modulator, a fourth micro-ring modulator, a first phase shifter, a second phase shifter, a third phase shifter, a first beam combiner, a second beam combiner and a third beam combiner. The carrier-suppression single side band electro-optical modulation device is low in power consumption, small in size and convenient to integrate.

Description

technical field [0001] The invention relates to a technology in the field of communication, in particular to a carrier suppressed single-sideband electro-optical modulation device. Background technique [0002] Single sideband modulation is an advanced modulation technique that can utilize power and bandwidth more effectively. The bandwidth of the modulated signal output by ordinary AM technology and double sideband modulation technology is twice that of the source signal. The carrier-suppressed single-sideband modulation technology only transmits one sideband and does not transmit the carrier, which greatly saves the power of the transmitting end, reduces the power consumption of the power supply, and includes all information at the same time, so that the effectiveness of the frequency band is improved. The implementation methods of single sideband modulation mainly include filtering method and phase shifting method. The filtering method is to obtain a single sideband sig...

Claims

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Application Information

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IPC IPC(8): H04B10/516
CPCH04B10/5165
Inventor 何祖源郑黎芳杜江兵
Owner SHANGHAI JIAO TONG UNIV
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