Sensor in a transceiver device for cooperation with an...

Details Sensor in a transceiver device for cooperation with an... Sensor in a transceiver device for cooperation with an...

2006-03-14

2006-03-14

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S227110, C250S206100, C385S012000

Reexamination Certificate

active

07012236

ABSTRACT:
A receiving device for cooperation with an optical fiber is provided with a sensor (3). The sensor (3) comprises two or more distinct sensor elements (4a, . . . , 4d) delivering an output signal with a strength that depends on the intensity applied to the sensor element (4a, . . . , 4d). A greatest dimension (a) of the sensor element (4a, . . . , 4d) is at most equal to half the diameter of a diffraction-limited spot (5) of the beam (2) exiting the optic fiber (1) at the location of the sensor elements (4a, . . . , 4d). A diametrical dimension (c) of the part of the sensor (3) provided with sensor elements (4a, . . . , 4d) is greater than the diameter of the beam (2) exiting from the optical fiber (1). Means (15) are present for determining the strength of the output signal from each sensor element (4a, . . . , 4d).

REFERENCES:
patent: 4515479 (1985-05-01), Pryor
patent: 6320173 (2001-11-01), Vock et al.
patent: 6492636 (2002-12-01), Chen et al.

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