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Journal Article Widely Tunable Multichannel Grating Cavity Laser
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Authors
Oh Kee Kwon, Jong Hoi Kim, Kang Ho Kim, Eun Deok Sim, Kwang Ryong Oh
Issue Date
2006-08
Citation
IEEE Photonics Technology Letters, v.18, no.16, pp.1699-1701
ISSN
1041-1135
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LPT.2006.879556
Project Code
05MB4400, 10 Gbps Wavelength Converter Integrated with Tunable Laser Diode, Oh Kwang Ryong
Abstract
A widely tunable grating cavity laser based on the Rowland circle construction for a concave grating is proposed and demonstrated. The device is implemented by employing multichannel array structure in a Littman configuration and fabricated by integrating all elements in an InP substrate. Only one channel is turned on at a time, with coarse tuning realized by selecting the appropriate element in the channel array and fine tuning by controlling the beam deflection provided by dispersive element. An overall tuning range of 50 nm with a sidemode suppression ratio of more than 30 dB has been achieved for the six-channel device. © 2006 IEEE.
KSP Keywords
Circle construction, Concave grating(CG), InP substrate, Littman configuration, Multichannel array, Tuning Range, Widely tunable, array structure, beam deflection, coarse tuning, dispersive element