Optical transmission system coupling a semiconductor laser diode

Details Optical transmission system coupling a semiconductor laser diode Optical transmission system coupling a semiconductor laser diode

1981-08-17

1984-04-03

Lee, John D.

350 9618, 357 17, G02B 726

Patent

active

044404700

ABSTRACT:
Optical transmission system comprising a laser diode which is coupled to a transmission fiber via a coupling path. The coupling path includes a monomode fiber or the series arrangement of a monomode fiber and a pluraity of multimode fiber lengths, the cross-section of which, see from the laser, increase in size. As a result thereof the modal noise and the reflection noise in the optical system in drastically reduced.

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patent: 4201447 (1980-05-01), Thompson et al.
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T. G. Giallorenzi, "Optical Communications Research & Technology: Fiber Optics," IEEE, vol. 66, No. 7, Jul. 1978, p. 746.
R. E. Epworth, "The Phenomenon of Modal Noise in Analogue and Digital Optical Fibre Systems," Proc. Fourth Eur. Conf. on Optical Comm., Sep. 12-15, 1978, pp. 492-501.
Y. Hirose et al., "Model for Return-Beam-Induced Noise Generation in GaAlAs Semiconductor Lasers," Electronic Lett., vol. 16, No. 6, 1980, pp. 202-204.

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