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Asymmetric sampled grating laser array for a multiwavelength WDM source
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- Authors
- Sang-Wan Ryu, Sung-Bock Kim, Jae-Sik Sim, Jeha Kim
- Issue Date
- 2002-12
- Citation
- IEEE Photonics Technology Letters, v.14, no.12, pp.1656-1658
- ISSN
- 1041-1135
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a multiwavelength laser array associated with asymmetric sampled grating lasers. The laser was designed to operate at the first-order reflection of a sampled grating with the aid of an index shifter. A four-channel laser array with 400-GHz wavelength spacing was fabricated and its operation at designed wavelengths was confirmed. Individual lasers showed a threshold current of 11-17 mA and slope efficiency of around 0.18 W/A. A high side-mode suppression ratio over 39 dB was observed as well.
- KSP Keywords
- First order, Four-Channel, High side, Laser array, Multiwavelength lasers, Sampled grating, Slope efficiency, Threshold current, WDM source, side mode suppression ratio(SMSR)