External cavity laser with high-sidemode suppression ratio using grating-assisted directional coupler

We propose and demonstrate, for the first time, a method to improve the sidemode suppression ratio (SMSR) of an external cavity laser (ECL) with a grating-assisted directional coupler as an external mirror. The ECL consisting of a Fabry-Pe/spl acute/rot laser diode and a grating-assisted coupler exh...

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Veröffentlicht in:	IEEE photonics technology letters 2005-11, Vol.17 (11), p.2430-2432
Hauptverfasser:	Jong Hoon Lim, Jong Hoon Lim, Jeong Hwan Song, Jeong Hwan Song, Ryun Kyung Kim, Ryun Kyung Kim, Kyung Shik Lee, Kyung Shik Lee, Jong Ryeol Kim, Jong Ryeol Kim
Format:	Artikel
Sprache:	eng
Schlagworte:	Bragg gratings Crosstalk Devices Directional couplers Distributed feedback devices External cavity laser (ECL) grating-assisted directional coupler Holes Joining Laser modes Lasers Light sources Mirrors Noise levels Optical filters Optical reflection Oscillations planar lightwave circuit (PLC) sidemode suppression ratio (SMSR) Wavelength division multiplexing Wavelengths
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Beschreibung
Zusammenfassung:	We propose and demonstrate, for the first time, a method to improve the sidemode suppression ratio (SMSR) of an external cavity laser (ECL) with a grating-assisted directional coupler as an external mirror. The ECL consisting of a Fabry-Pe/spl acute/rot laser diode and a grating-assisted coupler exhibited single-longitudinal-mode oscillation at Bragg wavelength with a high SMSR of 60 dB without any additional devices.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2005.857578