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Combined device of optical circulator and wavelength division multiplexer

A wavelength division multiplexer and optical circulator technology, which is applied in the field of optical communication devices, can solve the problems of size, performance and cost that are difficult to meet the requirements, and achieve the effect of low cost

Pending Publication Date: 2022-01-11
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current application demand scenario of high-speed optical transceiver modules, it is difficult to meet the requirements in terms of size, performance and cost by cascading traditional optical circulators and wavelength division multiplexers into optical fiber devices. Therefore, a Combination device of optical circulator and wavelength division multiplexer with highly integrated structure and package form

Method used

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  • Combined device of optical circulator and wavelength division multiplexer
  • Combined device of optical circulator and wavelength division multiplexer
  • Combined device of optical circulator and wavelength division multiplexer

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0034] Such as figure 2 As shown, Embodiment 1 of the present invention is a combined device of an optical circulator and a wavelength division multiplexer based on a fiber collimator. The combined device of this embodiment includes an optical circulator core, a first wavelength division multiplexing diaphragm 150, a second Two-wavelength division multiplexing diaphragm 151, first reflector 152, second reflector 153, first transmit collimator 160, second transmit collimator 161, first receive collimator 180, second receive collimator Device 181 and common end collimator 170;

[0035] The optical circulator core sequentially includes a left polarizing beam splitter 110, a Faraday rotator 120, a half-wave plate 130, and a right polarizing beam splitter 140 coated with a high reflection film 143; the Faraday rotator 120 and the half-wave plate 130 form a magneto-optic non-reciprocal components;

[0036] The common end collimator 170 is located at one side of the optical circul...

Embodiment 2

[0047] Such as image 3 As shown, Embodiment 2 of the present invention is a combined device based on an optical port assembly of an optical circulator and a wavelength division multiplexer, and its structure and principle are basically the same as those of Embodiment 1 (the structure includes an optical circulator core, a first wavelength division multiplexer Diaphragm 250, second wavelength division multiplexing diaphragm 251, first mirror 252, second mirror 253, first transmitting collimator 260, second transmitting collimator 261, first receiving collimator 280, The second receiving collimator 281 and optical port assembly 270; the optical circulator core sequentially includes a left polarization beam splitter 210, a Faraday rotator 220, a half-wave plate 230 and a right polarization beam splitter 240 coated with a high reflection film 243, The left polarizing beam splitter 210 is composed of a right-angled prism 212 and a parallel block 211, and the right polarizing beam ...

Embodiment 3

[0049] Such as Figure 4 As shown, Embodiment 3 of the present invention is a combined device of an optical circulator and a wavelength division multiplexer based on a single-ended fiber output of a fiber collimator. The combined device of this embodiment includes an optical circulator core and a wavelength division multiplexing film Sheet 350, mirror 352, transmitting collimator 360, first receiving collimator 380, second receiving collimator 381 and common end collimator 370; the optical circulator core includes left polarizing beam splitter 310, Faraday rotator plate 320, half-wave plate 330 and right polarizing beam splitter 340;

[0050] The left polarizing beam splitter 310 is composed of a rectangular prism 312 and a parallel block 311 , and the right polarizing beam splitter 340 is composed of a parallel block 341 and a parallel block 342 .

[0051] The rotation angle of Faraday rotator 320 is 45 °, and magnetic block 391 provides required magnetic field for Faraday r...

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Abstract

The invention discloses a combined device of an optical circulator and a wavelength division multiplexer. The combined device comprises an optical circulator core, a wavelength division multiplexing diaphragm, a collimator and the like. The combined device adopts free space design, is novel in structure and compact in layout, and has the advantages of high performance, low cost, small size and the like.

Description

technical field [0001] The invention relates to the technical field of optical communication devices, in particular to a combined device of an optical circulator and a wavelength division multiplexer. Background technique [0002] With the vigorous development of high-speed optical networks and data centers, optical communication equipment requires optical modules to have the characteristics of high transmission rate, small size and low cost. Optical circulators are widely used in optical modules because of their ability to transmit signal light in a specific direction. They can realize single-fiber bidirectional functions by sharing the common port to send and receive signal light, thereby improving integration and reducing costs. At the same time, adding a wavelength division multiplexer to the optical module to increase the number of optical transceiver wavelength channels can further increase the transmission rate of the optical module. In the current application demand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/27G02B6/293G02B6/42
CPCG02B6/2746G02B6/2938G02B6/4208G02B6/4215G02B6/4214
Inventor 赵武丽徐云斌李阳邓伟松林念念鲍宗杰王宗源
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD