Optical transceiver having enhanced EMI tolerance

摘要

An optical transceiver that reduces the EMI radiation leaked therefrom is disclosed. The optical transceiver includes a top cover and the bottom base to form a cavity into which a TOSA, a ROSA, and a circuit are set. The top cover provides a combed structure in a rear portion thereof, where the combed structure has a plurality of fins with a distance preferably less that quarter wavelength λ/4 of the noise wavelength to be reduced. The combed structure operates as a short stub for the electromagnetic wave traveling longitudinally in the cavity.

主权项

1. An optical transceiver, comprising:
an optical subassembly for converting one of an electrical signal and an optical signal into other of an electrical signal and an optical signal; an electronic circuit to communicate with the optical subassembly, the electronic circuit generating electromagnetic radiation; and a housing made of electrically conductive material, the housing enclosing the optical subassembly and the electronic circuit, wherein the housing includes a combed structure on an inner surface thereof including at least two fins forming a gap with a depth corresponding to a quarter wavelength of the electromagnetic radiation at 6.5 GHz to attenuate the electromagnetic radiation.