Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Patent
1995-02-03
1996-12-17
Bovernick, Rodney B.
Optical waveguides
With disengagable mechanical connector
Optical fiber to a nonfiber optical device connector
385 92, 385 88, 385 90, 385 91, G02B 642
Patent
active
055862080
ABSTRACT:
An analog photodiode (PD) module converts light including many AM signals of different frequencies into electric signals. It is desirable to suppress the distortion caused by the non-linearlity of the light-current conversion in the PD module as completely as possible. Extreme convergence of beams enhances the sensitivity but raises the distortion. Prior modules suppressed the distortion at an expense of the sensitivity. The present invention overcomes this problem by positioning the end of the fiber at a point which is closer to the lens than the maximum sensitivity range, thereby providing a distortion that is smaller than the predetermined value. The high sensitivity and the low distortion are compatible at the point.
REFERENCES:
patent: 4383731 (1983-05-01), Simon et al.
patent: 5107537 (1992-04-01), Schriks et al.
patent: 5119462 (1992-06-01), Matsubara et al.
patent: 5347604 (1994-09-01), Go et al.
Takada et al, "A Photodiode Module for an Analog CATV Application", 1990 Autumn National Convention Record, The Institute of Electronics, Information and Communication Engineers, pp. 4-69 (English Translation also enclosed).
Kusakabe et al, "Pin-PD Module for Analog CATV Transmission", 1991 Spring National Conention Record, The Institute of Electronics, Information and Communication Engineers, pp. 4-197 (English Translation also enclosed).
Bovernick Rodney B.
Palmer Phan T. H.
Sumitomo Electric Industries Ltd.
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