Title :
Optical filtering to reduce chirping influence in LD wavelength conversion
Author_Institution :
NTT LSI Labs., Kanagawa, Japan
fDate :
6/1/1996 12:00:00 AM
Abstract :
The use of an optical filter to reduce chirping influence in LD wavelength conversion is demonstrated. A part of broadened spectrum of wavelength-converted light is eliminated by a narrow-band optical filter, and sensitivity degradation due to frequency chirping is reduced as a result. In an experiment using a fiber Fabry-Perot filter, the sensitivity was improved by about 1.5 dB in 1.55-μm transmissions with normal dispersion fibers when an LD converter was biased at two times the threshold current.
Keywords :
chirp modulation; distributed feedback lasers; electro-optical modulation; interference filters; optical fibre filters; optical frequency conversion; semiconductor lasers; spectral line breadth; 1.55 mum; 20 GHz; 5 Gbit/s; 50 mA; LD converter; LD wavelength conversion; broadened spectrum; chirping influence reduction; fiber Fabry-Perot filter; frequency chirping; narrow-band optical filter; normal dispersion fibers; optical filtering; sensitivity degradation; threshold current; wavelength-converted light; Chirp; Degradation; Fabry-Perot; Filtering; Frequency; Narrowband; Optical fiber filters; Optical filters; Optical sensors; Optical wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
