Wavelength-tracking dispersion compensator

Details Wavelength-tracking dispersion compensator Wavelength-tracking dispersion compensator

2006-06-13

2006-06-13

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07061596

ABSTRACT:
A wavelength-tracking dispersion compensator (WT-DC) tracks the wavelength of a received input signal. The WT-DC includes an input signal optical monitor, a differential detector control circuit, a temperature controller, and an input signal dispersion compensator. The monitor includes a Mach-Zehnder interferometer that matches the dispersion compensator free-spectral range or an integer sub-multiple or multiple thereof. The monitor is coupled to the differential detector control circuit that controls a temperature controller to set the temperature of the monitor and dispersion compensator. The WT-DC automatically tracks the wavelength of the input signal. In a preferred embodiment, the monitor and the dispersion compensator are integrated on the same planar lightwave circuit chip and include a half-wave plate.

REFERENCES:
patent: 6266457 (2001-07-01), Jacob
patent: 6654564 (2003-11-01), Colbourne et al.
patent: 6714309 (2004-03-01), May

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