Title :
Crosstalk in twin-guide laser amplifier switches
Author :
Mace, D.A.H. ; Adams, M.J. ; Singh, J. ; Fisher, M.A. ; Henning, I.D. ; Elton, D.J. ; Baker, D.
Author_Institution :
British Telecom Res. Labs., Martlesham Heath, Ipswich, UK
fDate :
8/1/1990 12:00:00 AM
Abstract :
A study has been made of the factors influencing crosstalk in twin-guide laser amplifier switches. Theoretical analysis indicates that both crosstalk and wavelength tolerance can be improved by the use of anti-reflecting (AR) coatings. Preliminary experimental results on a low-reflectivity twin-ridge device have verified this prediction and yielded a measured crosstalk as low as -15 dB. The experimental measurements also examined the sensitivity of the crosstalk to wavelength, polarisation and temperature. Means to reduce the crosstalk still further have been identified
Keywords :
antireflection coatings; crosstalk; directional couplers; integrated optics; optical switches; semiconductor junction lasers; antireflecting coatings; crosstalk; directional coupler; low-reflectivity twin-ridge device; polarisation; semiconductor laser; sensitivity; temperature; twin-guide laser amplifier switches; wavelength tolerance;
Journal_Title :
Optoelectronics, IEE Proceedings J
