Splitter, multimode laser test assembly and optical module test system

Abstract

The invention provides an optical splitter, which at least comprises an optical input port, two optical output ports, a first lens and a second lens arranged between the input port and the output ports, and a light splitter and a glass slide, wherein the input port is arranged at a twofold focal length of the first lens; the light splitter is arranged between the first lens and the input port; the first output port is arranged at a twofold focal length of the other side, deviating from the input port, of the first lens; the glass slide is arranged between the first lens and the first output port; the second output port is arranged at a twofold focal length of the second lens; and the optical path of the first output port and the optical path of the second output port are completely symmetrical with the optical path of the input port respectively. The splitter, the multimode laser test assembly and the optical module test system provided by the invention have the advantages of low cost, accurate test, convenience and feasibility, and test requirements by products of the kind can be met.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a splitter, a multimode laser test assembly and an optical transceiver module test system. Background technique [0002] With the rapid development of communications and the Internet, video services and search services with large data volumes have grown rapidly, which has greatly driven the data center market based on supercomputers and storage. In short-distance interconnection applications, VCSEL (Vertical Cavity Surface Emitting Laser, Vertical Cavity Surface Emitting Laser) chips have been widely used and popularized due to their advantages of high speed, high parallel density, and low power consumption. [0003] The transmission module based on the VCSEL chip uses multimode optical fiber to build the transmission system, which makes the optical device coupling and assembly process simple and the coupling efficiency is improved. But it is obvious that the large...

AI Technical Summary

Problems solved by technology

The splitters and attenuators used in conventional testing of optical modules not only change the amplitude of the optical signal, but also change its phase, resulting in distortion of the test results

On the other hand, more mode injection, especially the injection of a large number of high-order modes, will not only increase the mode dispersion, but also increase the injection connection loss and generate noise signals caused by bending distortion, which seriously affects normal use.

Therefore, the testing of multimode fiber laser components and optical modules has attracted more and more attention from the industry. The Encircledflux testing equipment developed by the British arden company and the American pk company can better test the light source injection mode, but its high cost and cumbersome The operation is not conducive to the popularization of mass production, which in turn limits the standardization and unification of multi-mode optical transceiver modules

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