Optical transceiver unit

Details Optical transceiver unit Optical transceiver unit

1994-07-12

1996-07-09

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, 359163, 455 90, 455117, 455301, H04B 1000, H04B 1024

Patent

active

055350348

ABSTRACT:
An optical transceiver unit capable of preventing any crosstalk from an optical transmitter to an optical receiver to thereby avert reduction of the reception sensitivity. The optical transceiver unit comprises a multilayer printed circuit board, a lower case for housing the multilayer printed circuit board therein, and an upper case so disposed as to cover the lower case for enclosing the multilayer printed circuit board in an assembly of the two cases. A light emitting element module and a light receiving element module are attached to one side wall of the lower case. The printed circuit board has a first region where a transmitting circuit is formed, and a second region where a receiving circuit is formed. The first and second regions are completely isolated electromagnetically from each other by a first shield plate fixed to the lower case and a second shield plate fixed to the upper case.

REFERENCES:
patent: 4549314 (1985-10-01), Masuda et al.
patent: 4658439 (1987-04-01), Danielson et al.
patent: 5150282 (1992-09-01), Tomura et al.
patent: 5265265 (1993-11-01), Hama et al.

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