Demultiplexer for optical time-division multiplexed signals

Details Demultiplexer for optical time-division multiplexed signals Demultiplexer for optical time-division multiplexed signals

2005-01-04

2005-01-04

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Raman or brillouin process

C398S101000

Reexamination Certificate

active

06839159

ABSTRACT:
A demultiplexer for an optical time-division multiplexed digital signal, which has a signal wavelength λsand is transmitted with a bit rate B, is described. It comprises a Raman active optical medium, a pump source for generating a periodic optical pump signal having a pump wavelength λpand a periodicity of B
where n is an integer ≧2, and a coupler for coupling the digital signal and the pump signal into the Raman active optical medium. The new demultiplexer exploits the non-linear Raman gain response of the Raman active medium to a high power pump signal and has a narrow time window and a high extinction ratio.

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