Title :
Design of a DFB / DBR diode laser module including spectral multiplexing based on VBGs
Author :
Hengesbach, S. ; Witte, U. ; Traub, Martin ; Hoffmann, Dieter
Author_Institution :
Laser Technol., RWTH Aachen Univ., Aachen, Germany
Abstract :
We present the concept of a modular fiber coupled building block based on chirped DFB or DBR diode laser bars and a Dense Wavelength Division Multiplexer including Volume Bragg Gratings. The minimum channel spacing is 1.5 nm. Multiplexing efficiencies of 97% have been demonstrated in a pre-testing of the multiplexing unit with single mode, frequency stabilized diode laser radiation. For the presented building block with a beam parameter product of 2.2 mm mrad per emitter, the expected multiplexing efficiency is between 90% and 95% for a channel spacing of 1.5 nm, assuming a spectral width between 100 pm and 400 pm per channel.
Keywords :
Bragg gratings; chirp modulation; distributed Bragg reflector lasers; distributed feedback lasers; laser beams; optical fibre couplers; optical testing; semiconductor lasers; wavelength division multiplexing; VBG; channel spacing; chirped DBR diode laser bars; chirped DFB diode laser bars; dense wavelength division multiplexer; distance 1.5 nm; distributed Bragg reflector lasers; distributed feedback lasers; frequency stabilized diode laser radiation; laser beam parameter; modular fiber coupled building block; optical testing; spectral multiplexing; spectral width; volume Bragg gratings; Diode lasers; Distributed Bragg reflectors; Frequency division multiplexing; Laser beams; Measurement by laser beam; Semiconductor lasers; Multiplexing; Volume Bragg Grating (VBG); laser beam combining; semiconductor lasers;
Conference_Titel :
High Power Diode Lasers and Systems Conference (HPD), 2013
Conference_Location :
Coventry
Print_ISBN :
978-1-4799-2747-0
DOI :
10.1109/HPD.2013.6706596
