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Modal noise and optical feedback in high-speed optical systems at 0.85 mu m

: Baack, C.; Elze, G.; Enning, B.; Wolf, G.

Electronics Letters 16 (1980), No.15, pp.592-3
ISSN: 0013-5194
Journal Article
Fraunhofer HHI ()
digital communication systems; feedback; noise; optical communication; optical fibres; semiconductor junction lasers; optical feedback; modal noise; digital transmission system; optical broadband communication system; critical interferences; graded index fibre; high speed optical system; dh semiconductor lasers

The most critical interferences in optical broadband communication systems at 0.85 mu m are the modal noise in a graded-index fibre and the feedback problems in DH semiconductor lasers. Experiments with these two phenomena in a high-speed digital transmission system are described.