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US 9,039,301 B2Granted
Optical transceiver having enhanced EMI tolerance
AssigneeSumitomo Electric Industries, Ltd.
InventorsDaisuke Kawase, Kuniyuki Ishii, Hiroyasu Oomori, Hiromi Kurashima
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Abstract
An optical transceiver that attenuates 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. At least one of the top cover and the bottom base provides a combed structure in a rear portion of the optical transceiver, where the combed structure has a plurality of T-shaped fins to attenuate the EMI radiation.
Claims13
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 interference (EMI) 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 with a T-shaped fin formed by an overhang and a post to attenuate the EMI radiation.
2 more elements
An optical communication apparatus, comprising:
- a host system providing a metal cage;
- and
- an optical transceiver set in the metal cage, wherein the optical transceiver includes,
- 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 interference (EMI) radiation,
- a housing made of electrically conductive material, the housing enclosing the optical subassembly and the electronic circuit, and
- a ground finger making in contact with the metal cage,
- wherein the housing includes a combed structure with a T-shaped fin including an overhang supported by a post to attenuate the EMI radiation.
5 more elements
Dependencies are inferred from the claim text.