Optical transceiver and projection covering member
AssigneeOpnext Japan, Inc.
InventorsFumihide MAEDA, Taichi KOGURE
Life of this patent
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Abstract
Provided are an optical transceiver and a projection covering member that can suppress EMI noise radiated from a pig-tail part. An elastic covering member for covering a projection which includes an optical coupler of an optical sub assembly is made of a conductive elastic material having predetermined resistivity. At least a part of an outer circumference surface of the elastic covering member comes into intimate contact with an outer periphery of a conductive opening part of a case while an inner circumference surface of the elastic covering member contacts with the projection.
Claims9
An optical transceiver comprising:
- an optical sub assembly having a main body part for housing a semiconductor optoelectronic device and a projection which includes an optical coupler for optically coupling an optical fiber inserted externally to the semiconductor optoelectronic device;
- a printed circuit board on which a circuit connected to the semiconductor optoelectronic device via a signal transmission line is mounted;
- a covering member for covering the projection;
- and
- a conductive case for housing the optical sub assembly and the printed circuit board, the conductive case having an opening part through which the projection covered with the covering member passes from inside to outside, wherein:
- at least an outer circumference surface and an inner circumference surface of the covering member are made of a conductive elastic material having predetermined resistivity;
- and
- at least a part of the outer circumference surface comes into intimate contact with an entire or a part of an outer periphery of the opening part, and an entire or a part of the inner circumference surface contacts with the projection.
A projection covering member for covering a projection which includes an optical coupler of an optical transceiver comprising:
- an optical sub assembly having a main body part for housing a semiconductor optoelectronic device and the projection for optically coupling an optical fiber inserted externally to the semiconductor optoelectronic device;
- a printed circuit board on which a circuit connected to the semiconductor optoelectronic device via a signal transmission line is mounted;
- and
- a conductive case for housing the optical sub assembly and the printed circuit board, the conductive case having an opening part through which the projection passes from inside to outside,
- wherein:
- at least an outer circumference surface and an inner circumference surface of the projection covering member are made of a conductive elastic material having predetermined resistivity;
- and
- at least a part of the outer circumference surface comes into intimate contact with an entire or a part of an outer periphery of the opening part, and an entire or a part of the inner circumference surface contacts with the projection.
Dependencies are inferred from the claim text.