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Detail
Journal Article
Fabrication of Butt-Coupled SGDBR Laser Integrated with Semiconductor Optical Amplifier Having a Lateral Tapered Waveguide
- Authors
- Su Hwan Oh, Hyun Sung Ko, Ki Soo Kim, Ji Myon Lee, Chul Wook Lee, Oh Kee Kwon, Sahng Gi Park, Moon Ho Park
- Issue Date
- 2005-10
- Citation
- ETRI Journal, v.27, no.5, pp.551-556
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- We have demonstrated a high-power widely tunable sampled grating distributed Bragg reflector (SGDBR) laser integrated monolithically with a semiconductor optical amplifier (SOA) having a lateral tapered waveguide, which is the first to emit a fiber-coupled output power of more than 10 dBm using a planar buried heterostructure (PBH). The output facet reflectivity of the integrated SOA using a lateral tapered waveguide and two-layer AR coating of TiO2 and SiO2 was lower than 3 × 10-4 over a wide bandwidth of 85 nm. The spectra of 40 channels spaced by 50 GHz within the tuning range of 33 nm were obtained by a precise control of SG and phase control currents. A side-mode suppression ratio of more than 35 dB was obtained in the whole tuning range. Fiber-coupled output power of more than 11 dBm and an output power variation of less than 1 dB were obtained for the whole tuning range.
- KSP Keywords
- 5 nm, AR coating, Facet reflectivity, Fiber-coupled, High power, Output power, Phase control, Power variation, Precise control, Sampled grating distributed Bragg reflector(SG-DBR), Semiconductor optical amplifiers(SOAs)