WDM channel insertion

Details WDM channel insertion WDM channel insertion

1996-10-29

1998-07-28

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359130, 359187, 385 24, 385 37, H04J 1402

Patent

active

057869146

ABSTRACT:
A channel insertion filter for a WDM system is provided by an optical waveguide Mach Zehnder comprising a pair of 3dB couplers interconnected by a pair of interference arms in which are created a pair of Bragg reflectors. These reflectors are partially reflecting at the channel insertion wavelength so that some of the light of the associated channel transmitter is transmitted by them to provide a feedback control loop error signal for regulating the emission wavelength of the transmitter.

REFERENCES:
patent: 5321543 (1994-06-01), Huber
patent: 5513030 (1996-04-01), Epworth
patent: 5532857 (1996-07-01), Gertel et al.

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