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A widely tunable SOA-integrated DBR laser by combination of sampled and superstructure gratings

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3 Author(s)
Gotoda, M. ; Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Hyogo, Japan ; Nishimura, Tetsuya ; Tokuda, Y.

We report on the development of the first 30 nm tunable laser diode utilizing a front sampled grating-distributed Bragg reflector (SG-DBR) and a rear superstructure grating DBR (SSG-DBR). A high output power greater than 18 mW was achieved with superior longitudinal mode stability, as well as an overall power variation of less than 3 dB for the well-defined laser. Furthermore, lasers integrated with a semiconductor optical amplifier (SOA) enabled the output power to be controlled independently both by the active current and the SOA current, as well as achieving a maximum output power of 45 mW. The side-mode suppression ratio was in excess of 40 dB for all the 50 GHz spaced wavelength channels.

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Lightwave Technology, Journal of  (Volume:23 ,  Issue: 7 )