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Journal Article
Suppression of Thermal Wavelength Drift in Widely Tunable DS-DBR Laser for Fast Channel-to-Channel Switching
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- Authors
- Sanghwa Yoo, Joon Ki Lee, Kwangjoon Kim
- Issue Date
- 2017-11
- Citation
- Optics Express, v.25, no.24, pp.30406-30417
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Project Code
- 17HH1800, Development of Data Center Optical Networking Core Technologies for Photonic Frame based Packet Switching, Kim Kwangjoon
- Abstract
- We present a simple and effective method for suppressing thermally induced wavelength drift in a widely tunable digital supermode distributed Bragg reflector (DS-DBR) laser monolithically integrated with a semiconductor optical amplifier (SOA). For fast thermal compensation, pre-compensatory currents are injected into the gain medium section of the DS-DBR laser and the SOA. This method can be easily applied to existing commercial tunable lasers, since it is implemented without any modification to manufacturing process. Experimental results exhibit that wavelength stability is noticeably improved to 짹 0.01 nm. We also experimentally demonstrate a fast channel-to-channel switching in a wavelength-routed optical switching system employing a 90 × 90 arrayed waveguide grating router (AWGR). The measured switching time is less than 0.81 쨉s.
- KSP Keywords
- Arrayed waveguide grating router, Channel Switching, DBR laser, Distributed Bragg reflector, Gain medium, Manufacturing processes, Optical switching system, Semiconductor optical amplifiers(SOAs), Switching time, Thermal compensation, Thermally induced