Journal article
Crosstalk in 1.5-μm InGaAsP optical amplifiers
A dynamical model for multichannel amplification by near-traveling-wave optical amplifiers is presented, and results on crosstalk induced by either amplitude modulation or frequency modulation are given. The mechanisms influencing the crosstalk most are the residual facet reflectivities and the detuning of the channels relative to the amplifier Fabry-Perot spectrum.
Calculations of worst-case crosstalk levels are included. The model is verified experimentally for amplitude-modulated signals, and crosstalk levels up to -7 dB are reported. For frequency-modulated signals, estimated crosstalk is significantly lower and can be reduced by high quality facet coatings
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 1988 |
| Pages: | 1559-1565 |
| ISSN: | 15582213 and 07338724 |
| Types: | Journal article |
| DOI: | 10.1109/50.7916 |
1.5 micron Amplitude modulation Fabry-Perot Fabry-Perot spectrum Frequency estimation Frequency modulation III-V semiconductors InGaAsP optical amplifiers Optical amplifiers Optical crosstalk Optical modulation Reflectivity Semiconductor optical amplifiers Stimulated emission amplitude modulation crosstalk detuning frequency modulation gallium arsenide indium compounds laser beam applications multichannel amplification optical modulation residual facet reflectivities
