Title :
Multichannel grating cavity (MGC) laser transmitter for wavelength division multiplexing applications
Author :
Nyairo, K.O. ; White, I.H. ; Kirkby, P.A. ; Armistead, C.J.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
fDate :
10/1/1991 12:00:00 AM
Abstract :
A detailed experimental investigation of a wavelength switchable multichannel grating cavity (MGC) laser is reported with properties particularly suitable for applications in broadband wavelength division multiplexing systems. The source consists of a bar of laser ridges with one facet antireflection (AR) coated, a collimating lens and a diffraction grating. By changing the electrical bias to individual laser ridges, precise wavelength switching is achieved across the complete gain spectrum of the diode laser material. A detailed investigation of multiple simultaneous channel generation is reported and a method is outlined to overcome channel crosstalk. Good agreement between theory and experiment is reported
Keywords :
antireflection coatings; diffraction gratings; laser cavity resonators; lenses; multiplexing equipment; optical switches; semiconductor laser arrays; InGaAsP-InP; antireflection coated facet; broadband WDM; channel crosstalk; collimating lens; diffraction grating; electrical bias; gain spectrum; laser ridges; laser transmitter; multichannel grating cavity; multiple simultaneous channel generation; optical switches; wavelength division multiplexing; wavelength switchable;
Journal_Title :
Optoelectronics, IEE Proceedings J
