Title :
New integrated buried laser-ridge modulator with identical active layer
Author :
Le Pallec, M. ; Kazmierski, C. ; Vergnol, E. ; Perrin, Stephane ; Provost, J.G. ; Doussiere, P. ; Glastre, G. ; Carpentier, D. ; Fabre, S.
Author_Institution :
Alcatel CIT-Optoplus, Marcoussis, France
fDate :
3/1/2003 12:00:00 AM
Abstract :
Integrated laser modulators are attractive devices for wavelength-division-multiplexing optical systems due to their compactness, high output power, and low cost. Their fabrication simplicity is a way to decrease further the transmitter cost and address new opening markets of short range and metropolitan networks. We report a new integration scheme electroabsorption-modulator distributed feedback (DFB) laser based on well-established industrial solutions for discrete buried ridge (BRS) DFB lasers and discrete shallow ridge modulators. Processing simplification with an identical active layer has been possible due to a good behavior of strongly positively detuned BRS lasers. The integrated devices demonstrated 30-dB extinction ratio with 10-GHz bandwidth and P/sub out/=10 dBm for emission in 1.55-μm range.
Keywords :
distributed feedback lasers; electro-optical modulation; electroabsorption; integrated optoelectronics; laser tuning; optical communication equipment; optical waveguides; ridge waveguides; semiconductor lasers; waveguide lasers; 1.55 micron; 10 GHz; DFB laser; bandwidth; compactness; discrete buried ridge DFB lasers; discrete shallow ridge modulators; extinction ratio; high output power; identical active layer; integrated buried laser-ridge modulator; integrated devices; integrated laser modulators; integration scheme electroabsorption-modulator; low cost; metropolitan networks; short range networks; strongly positively detuned BRS lasers; transmitter cost; wavelength-division-multiplexing optical systems; Costs; Distributed feedback devices; Integrated optics; Laser feedback; Optical devices; Optical feedback; Optical modulation; Optical transmitters; Power generation; Power lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.807935
