Optical transmission link capable of high temperature operation

Details Optical transmission link capable of high temperature operation Optical transmission link capable of high temperature operation

1995-10-23

1998-06-02

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359163, 359180, 372 34, H04B 1000

Patent

active

057609390

ABSTRACT:
An optical transmission link has both a transmitter module and a receiver module operable under uncooled conditions, i.e., without the need of costly cooling equipment, such as thermoelectric coolers. The optical transmission system includes both a semiconductor laser diode source and an optical receiver module that are both designed to operate uncooled under high frequencies (e.g., GHz range) over a wide temperature range without significant changes in signal bandwidth and at temperatures in excess of 125.degree. C. Compensation is provided to reduce the effect of photodiode noise and amplifier noise. In addition, temperature compensation can be provided that provides for overall reduction in receiver noise across the bandwidth of the receiver module through maintenance of a temperature environment optimizing receiver performance.

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R. Nagarajan et al., "Data-Link Components Meet Satellite Requirements", Laser Focus World, p. 117 et seq., Nov., 1996.
J. Krawczak "Wide Temperature Digital Fiber Optic Transmitters and Receivers for High Bandwidth Military Applications" Proceedings of IEEE 1992 Natl. Conf., NAECON 1992, pp. 1179-1185.
Sagawa et al. "High-Power Highly Reliable Operation of 0.98 micronmicron In GaAs-InGaP Strain Comp Single, etc.", IEEE Journ. of Selected Topics in Quantum Electronics, Jun. 1, 1995, vol. 1, No. 2, pp. 189-191.

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