Polarization scrambler unit and multi-repeater transmission...

Details Polarization scrambler unit and multi-repeater transmission... Polarization scrambler unit and multi-repeater transmission...

2005-01-25

2005-01-25

Healy, Brian (Department: 2874)

Optical waveguides

Polarization without modulation

C385S016000, C385S023000, C398S002000, C398S006000, C398S065000, C398S152000, C398S177000

Reexamination Certificate

active

06847743

ABSTRACT:
A polarization scrambler unit includes a plurality of polarization scramblers, a switching unit for coupling one of the polarization scramblers to a transmission line fiber, a detection unit for detecting an output signal from the polarization scrambler coupled to the transmission line fiber, and a controlling unit for switching, via the switching unit, between the polarization scramblers and another polarization scrambler whenever a false output signal is detected by the detection unit. Thus, the polarization scrambler unit has a redundant structure.

REFERENCES:
patent: 5031236 (1991-07-01), Hodgkinson et al.
patent: 5247382 (1993-09-01), Suzuki
patent: 5841557 (1998-11-01), Otsuka et al.
patent: 6115155 (2000-09-01), Liu et al.
patent: 6396575 (2002-05-01), Holland
patent: 03-067231 (1991-03-01), None
patent: 06-275898 (1994-09-01), None

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