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Generation Of High Speed, Linear Wavelength Sweeps Using Sampled Grating Distributed Bragg Reflector Lasers, Shane O' Connor, Michael A. Bernacil, Dennis Derickson
Generation Of High Speed, Linear Wavelength Sweeps Using Sampled Grating Distributed Bragg Reflector Lasers, Shane O' Connor, Michael A. Bernacil, Dennis Derickson
Electrical Engineering
Wavelength-tunable sampled grating distributed Bragg reflector (SG-DBR) lasers are used for telecommunications applications in which the laser is set to a communication channel and changed infrequently. SG-DBR lasers can be tuned to any wavelength over a 50 nm tuning range with fast transition times using a set of three control currents. This paper demonstrates generation of fast linear wavelength ramps covering the entire tuning range of the laser. Continuous and linear wavelength sweeps are achieved by applying three time synchronized waveforms to the front mirror, back mirror, and phase sections of the laser. Continuous wavelength coverage is achieved by appending …