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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Published inIEEE photonics technology letters Vol. 17; no. 11; pp. 2430 - 2432
Main Authors 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 Journal Article
LanguageEnglish
Published New York IEEE 01.11.2005
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
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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Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.857578