New integrated buried laser-ridge modulator with identical active layer

• Published in: IEEE photonics technology letters Vol. 15; no. 3; pp. 362 - 364
• Main Authors: Le Pallec, M., Kazmierski, C., Vergnol, E., Perrin, S., Provost, J.G., Doussiere, P., Glastre, G., Carpentier, D., Fabre, S.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2003; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Costs; Devices; Distributed feedback devices; Emission; Integrated optics; Laser feedback; Lasers; Markets; Modulators; Networks; Optical devices; Optical feedback; Optical modulation; Optical transmitters; Power generation; Power lasers; Ridges; Simplification
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2002.807935

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.