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LD redundancy system using polarization components for a submarine optical transmission system

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4 Author(s)
Tsutsumi, S. ; NTT Public Corp., Take, Yokosuka, Japan ; Ichihashi, Y. ; Sumida, M. ; Kano, H.

An LD redundancy system having one cold standby laser diode is proposed to improve reliability in submarine optical transmission systems. This system makes use of the intrinsic laser polarization and consists of two LD modules and a polarization coupler connected by polarization maintaining (PANDA) fibers. The optical power insertion loss of this LD redundant system is 5.5 dB, including coupling loss between the laser diode and PANDA fiber. This LD redundant system will be applied in submarine optical repeaters.

Published in:

Lightwave Technology, Journal of  (Volume:2 ,  Issue: 6 )

Date of Publication:

Dec 1984

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