Title :
Reduction of crosstalk in a photonic space division switching network employing traveling wave amplifiers and automatic power control
Author :
Burke, Conrad ; Fujiwara, Masahiko ; Shiragaki, Tatsuya
Author_Institution :
NEC Corp., Kawasaki, Japan
fDate :
7/1/1992 12:00:00 AM
Abstract :
Because of optical loss variations through different connection paths in LiNbO/sub 3/ switch matrices, optical crosstalk in a photonic space division switching network will be enhanced. This work theoretically investigates the power penalty due to optical crosstalk in a 128 line photonic space division switching network which employs loss compensating semiconductor amplifiers, and experimentally confirms the suppression of power penalty by employing an automatic power control (APC) scheme. Experiments have shown the successful operation of an APC system in keeping a constant optical power level throughout the system and the negligible power penalty values obtained agree with a calculated model.<>
Keywords :
crosstalk; optical links; optical losses; optical switches; optical variables control; power control; semiconductor junction lasers; switching networks; telecommunications control; 128 line; LiNbO/sub 3/ switch matrices; automatic power control; crosstalk; loss compensating semiconductor amplifiers; optical loss variations; photonic space division switching network; power penalty; traveling wave amplifiers; Optical crosstalk; Optical fiber networks; Optical losses; Optical switches; Power amplifiers; Power control; Power semiconductor switches; Power system modeling; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
