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1.5-μm wavelength tunable phase-shift-controlled distributed feedback laser

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1 Author(s)
T. Numai ; NEC Corp., Tsukuba, Japan

A 1.5 μm wavelength tunable phase-shift-controlled distributed feedback laser diode is studied. This wavelength tunable laser controls the light output power and the oscillation wavelength independently by current injection. During wavelength tuning, the submode suppression ratio is large and an almost constant spectral linewidth from 24 to 29 MHz is achieved over a wavelength tuning range as wide as 113 GHz (9.0 Å). The threshold gain change and the loss change are small during wavelength tuning and as a result an almost constant light output power is achieved

Published in:

Journal of Lightwave Technology  (Volume:10 ,  Issue: 2 )