Improvement of wavelength detuning tolerance in the non-return-to-zero to pseudo-return-to-zero signal conversion for clock signal extraction, using null-expanded phase-shifted fiber Bragg gratings (NE-PSFBGs), has been experimentally demonstrated. With the NE-PSFBG having more than five times wider nulls than the conventional PSFBG, the wavelength detuning tolerance was improved 40%.

© 2007 IEEE

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