Bidirectional parallel optical transceiver module and a method for bidirectionally communicating optical signals over an optical link

摘要

Bidirectional parallel optical transceiver modules for use in optical links and methods for communicating bidirectionally over the links are provided. The bidirectional parallel optical transceiver modules have features that ensure relatively low optical crosstalk, relatively low return loss and relatively high SNR. In addition, the modules have an in-line, zig-zag configuration that allows the modules to be compact and to have high bidirectional channel density for achieving high bandwidth.

主权项

1. A bidirectional parallel optical transceiver module comprising:
a generally planar mounting surface that lies in a first plane; an array of light sources mounted on the mounting surface; an array of light detectors mounted on the mounting surface; an optics system disposed on the mounting surface above the array of light sources and the array of light detectors, the optics system comprising:
an upper part that is secured to a lower part by a refractive index matching epoxy;a first beam splitter; anda pocket disposed between the upper part and the lower part of the optics system, the refractive index matching epoxy surrounding and fixedly positioning the first beam splitter inside the pocket, the first beam splitter having a first filter disposed on an upper side and a second filter disposed on a lower side, wherein first optical signals produced by the array of light sources are incident on the second filter that splits each of the first optical signals into at least first and second portions, the first portions of the first optical signals passing through the refractive index matching epoxy and the upper side of the first beam splitter before being coupled by one or more first optical elements of the optics system into respective end faces of respective optical fibers that are mechanically coupled to the optics system; and an array of monitor light detectors mounted on the mounting surface and configured to receive the second portions of the optical signals from the second filter.