Fiber bragg grating dispersion compensator

A dispersion compensator comprising:

• a length of a waveguide including a grating region having two opposite ends,
• a heat distributing body extending along the grating region and in thermal non-mechanical contact therewith, the waveguide attached to the distributor at two ends thereof,
• a heating element mounted to the body and extending alone the grating region for controlled heating of the entire grating region, and,
• a longitudinally variable heating means adjacent to and extending along the length of the distributing body and the grating region, the heating means adapted to provide a linearly variable heating intensity along the length of the grating region.

A dispersion compensator comprising:

• a length of a waveguide including a grating region having two opposite ends,
• a heat distributing body extending along the grating region and in thermal non-mechanical contact therewith, the waveguide attached to the distributor at two ends thereof,
• a heating element mounted to the body and extending alone the grating region for controlled heating of the entire grating region
• temperature sensors disposed at the ends of the distributor and a temperature sensor disposed intermediate the ends of the distributor for generating a signal indicative of the temperature of the distributor, and
• a longitudinally variable heating means adjacent to and extending along the length of the distributing body and the grating region, the heating means adapted to provide linearly variable heating intensity along the length of the grating region.

A dispersion compensator comprising:

• a length of a waveguide including a grating region having two opposite ends,
• a heat distributing body extending along the grating region and in thermal non-mechanical contact therewith, the waveguide attached to the distributor at two ends thereof,
• a heating element mounted to the body and extending along the grating region for controlled heating of the entire grating region, and,
• a terminal heating means disposed at the two ends of the grating region for controlled heating of at least a part of the grating region.

A dispersion compensator comprising

• an elongated body defining a channel therein along the length of the body,
• a length of an optical waveguide including a chirped Bragg grating region having two opposite ends, the optical waveguide disposed in the channel,
• a heating strip mounted to the body and extending along the grating region for controlled uniform heating of the entire grating region,
• a temperature sensor disposed in the mid-length of the distributor and the grating region for generating a signal indicative of the temperature of the grating region, and
• a longitudinally variable heating means adjacent to and extending along the length of the distributing body and the grating region for effecting a longitudinally varying heating of the grating region, the heating means having a monotonic heating-intensity variance along the length of the grating region.