Title :
Ultra-narrow (sub-MHz) Linewidth Emission from Discrete Mode Laser Diodes
Author :
Guignard, C. ; Patchell, J. ; Jones, D. ; Kelly, B. ; Barry, L.P. ; Besnard, P. ; Gorman, J.O.
Author_Institution :
Dublin City Univ., Dublin
Abstract :
A class of laser which exhibits ultra-narrow sub MHz linewidth emission necessary for numerous applications in optical communications and sensors is described. The spectral performance of commercial discrete mode (DM) and distributed feedback (DFB) lasers is compared. The devices used in this work are asymmetrically coated ridge waveguide Fabry Perot lasers which incorporated etched slot features and emitting around lambda = 1.55 mum. The active region of the devices consisted of a strained compensated InAlGaAs MQW structure.
Keywords :
III-V semiconductors; aluminium compounds; distributed feedback lasers; etching; gallium arsenide; indium compounds; laser modes; quantum well lasers; semiconductor lasers; waveguide lasers; DFB lasers; InAlGaAs; asymmetrically coated ridge waveguide Fabry Perot lasers; discrete mode laser diodes; distributed feedback lasers; etched slot features; optical communications; optical sensors; spectral performance; strained compensated quantum well structure; ultranarrow linewidth emission; Delta modulation; Diode lasers; Distributed feedback devices; Laser feedback; Laser modes; Optical fiber communication; Optical sensors; Optical waveguides; Sensor phenomena and characterization; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4385949
