Single-chip integrated wavelength division multiplexing single-fiber bidirectional data transmission module

Abstract

The invention proposes a single-chip integrated wavelength division multiplexing single-fiber bidirectional data transmission module, and the module comprises a wavelength division multiplexing module, a wavelength division demultiplexing module and an optical circulator. A first comb filter, a second comb filter and a third comb filter are integrated on the wavelength division multiplexing module, and the first end and the second end of the first comb filter and the first end and the second end of the second comb filter respectively serve as the input ends of the wavelength division multiplexing module for receiving four optical signals with different wavelengths. A fourth comb filter, a fifth comb filter and a sixth comb filter are integrated on the wave demultiplexing module. The firstend and the second end of the fourth comb filter and the first end and the second end of the fifth comb filter respectively serve as four output ends of the wave decomposition demultiplexing module for outputting four optical signals with different wavelengths. PBSs in the optical circulator are prepared by the optical waveguide technology, and a single-mode optical waveguide between the PBSs arelaterally grooved, and a polarization conversion component is inserted, thereby realizing the loop transmission of the optical signals between the three ports.

Description

technical field [0001] The invention belongs to a passive optical module in the field of optical communication and optical interconnection, and more specifically relates to a single-chip integrated wavelength division multiplexing single-fiber bidirectional data transmission module. Background technique [0002] The vigorous development of Internet applications has promoted the large-scale construction of data centers. High-speed data transmission between data center servers can only be achieved through optical fiber interconnection technology. Optical fiber interconnection technology has experienced multi-mode optical fiber parallel transmission, single-mode optical fiber parallel transmission and Single-mode fiber wavelength division multiplexing transmission stage. Different from the DWDM (Dense Wavelength Division Multiplexing) technology that is popular in telecom network applications, in data center applications, in order to reduce costs, CWDM (Coarse Wavelength Divisi...

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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a single-chip integrated wavelength division multiplexing single-fiber bidirectional data transmission module, which aims to solve the problems in the prior art due to the connection of separate devices and the optical circulator for 1310nm The design of the center wavelength leads to the problem that the traditional data transmission module is too large, the integration level is low, and it is not convenient to use in the data center

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