Title :
Chirp control of an optical signal using phase modulation in a semiconductor optical amplifier
Author :
Watanabe, Toshio ; Sakaida, Norio ; Yasaka, Hiroshi ; Koga, Masafumi
Author_Institution :
NTT Opt. Networks Syst. Labs., Kanagawa, Japan
fDate :
7/1/1998 12:00:00 AM
Abstract :
We demonstrate that phase modulation in a semiconductor optical amplifier converts a positively chirped signal launched from an electroabsorption modulator into negative chirp. This negative chirp reduces the broadening of optical signal waveform due to the anomalous dispersion in standard single-mode fiber (SMF). A 2.5-Gb/s transmission experiment across 600-km SMF confirms that the chirp control technique is effective for extending the signal transport distance.
Keywords :
electro-optical modulation; electroabsorption; optical fibre dispersion; optical transmitters; phase modulation; semiconductor lasers; 2.5 Gbit/s; 600 km; Gb/s transmission experiment; anomalous dispersion; chirp control; chirp control technique; electroabsorption modulator; negative chirp; optical signal; optical signal waveform broadening; phase modulation; positively chirped signal; semiconductor optical amplifier; signal transport distance; standard single-mode fiber; Chirp modulation; Optical control; Optical distortion; Optical fiber polarization; Optical losses; Optical modulation; Optical saturation; Phase modulation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
