Optical Tunable Dispersion Compensators Based onThermally Tuned Fiber Bragg Gratings

Yves Painchaud, Carl Paquet and Martin Guy

Fiber Bragg gratings are well positioned to respond to the growing need for more stringent control of dispersion compensation. Thermal tuning has proven to be an effective technique for achieving this goal.



Pulse broadening due to chromatic dispersion Broadening occurs in transport fiber and recompression using a chirped fiber Bragg grating.

Tunable chromatic dispersion compensators are known to be critical components of 40 Gb/s systems. They are already required at 10 Gb/s, and there was an extensive deployment over the past 10 years of fixed dispersion compensation modules, mainly based on dispersion compensating fiber and, more recently, fiber Bragg gratings.

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