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Four-port circulator and optical module

A circulator and four-port technology, which is applied in the field of coherent optical communication, can solve problems such as limited use, and achieve the effects of short production cycle, small overall volume, and simple production and implementation process

Inactive Publication Date: 2021-05-14
武汉恩达通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a four-port circulator and an optical module, which solves the above-mentioned technical problem that the operating wavelengths of the two WDM duplexers must be complementary and coincident, resulting in limited use

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  • Four-port circulator and optical module
  • Four-port circulator and optical module
  • Four-port circulator and optical module

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Embodiment Construction

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention. In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0028]It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be a centered component. When a component is considered to be "connected" to another component, it may be ...

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Abstract

The invention relates to the technical field of coherent optical communication, in particular to a four-port circulator and an optical module. The four-port circulator comprise a polarization splitting prism, a first optical transmitting port, a second optical fiber transmission interface, a third optical receiving port, a fourth optical receiving port, a Faraday magnetic rotation plate and a half-wave plate. Iincident light emitted from the second optical fiber transmission interface is subjected to a series of reflection and transmission and is finally outputted by the third light receiving port and the fourth light receiving port. According to the scheme, an optical transmission path for transmitting from the second optical fiber transmission interface to the fourth optical receiving port is added, and the optical signal inputted from the second optical fiber transmission interface each time can only be outputted from the third optical receiving port or the fourth optical receiving port and cannot be outputted from the first optical transmitting port. Therefore, the purpose of unidirectional transmission of the optical signal is achieved, and the output optical signal of the fourth optical receiving port is added at the same time. The BIDI optical module can couple and separate data transmitted by a single optical fiber so that the cost is lower under the same transmission effect.

Description

technical field [0001] The invention relates to the technical field of coherent optical communication, in particular to a four-port circulator and an optical module. Background technique [0002] At present, most optical modules transmit data through two optical fibers, one of which is used to output data from network equipment, and the other optical fiber is used to transmit data to network equipment. BIDI (bidirectional) optical module is a single-fiber bidirectional coherent optical module, which uses WDM technology to transmit and output two central wavelengths in different directions to realize bidirectional transmission of optical signals on one optical fiber. Ordinary optical modules generally have two optical fiber transmission interfaces: the transmitting port (TX) and the receiving port (RX), while the BIDI optical module has only one optical fiber transmission interface, which is filtered by the filter in the optical module and simultaneously completes a wavelengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42
CPCG02B6/4208G02B6/4209G02B6/4214
Inventor 顾共恩张美容樊恒志
Owner 武汉恩达通科技有限公司
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