Noise characteristics of semiconductor-optical amplifiers used for wavelength conversion via cross-gain and cross-phase modulation

Author

Obermann, K. ; Kindt, S. ; Breuer, D. ; Petermann, K. ; Schmidt, C. ; Diez, S. ; Weber, H.G.

Author_Institution

Fachgebeit Hochfrequenztech., Tech. Univ. Berlin, Germany

Volume

9

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

312

Lastpage

314

Abstract

The amplified spontaneous emission of a semiconductor-optical amplifier saturated by two input waves is investigated theoretically and experimentally for both co- and counterpropagating injection. For the first time, an analytical expression for counterpropagating input waves is presented and compared with the copropagating case. It is shown, that copropagating injection can significantly reduce the noise level. The theoretical results are also compared with the experimental data and found to be in good agreement.

Keywords

laser noise; optical frequency conversion; optical modulation; optical saturation; phase modulation; semiconductor lasers; superradiance; InGaAsP; amplified spontaneous emission; copropagating injection; counterpropagating injection; cross-gain; cross-phase modulation; input wave saturation; noise characteristics; noise level; semiconductor-optical amplifiers; wavelength conversion; Charge carrier density; Intensity modulation; Noise level; Optical amplifiers; Optical noise; Optical signal processing; Optical wavelength conversion; Semiconductor device noise; Semiconductor optical amplifiers; Spontaneous emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.556057

Filename

556057