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Continuously tunable thin active layer and multisection DFB laser with narrow linewidth and high power

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4 Author(s)
Fukuda, M. ; NTT Optoelectron. Labs., Kanagawa, Japan ; Sato, K. ; Kondo, Y. ; Nakao, M.

The feasibility of a wavelength tuning range of 1 nm with the spectral linewidth around 2.5 MHz at about 10 mW is demonstrated in thin-active-layer and multisection 1.5-μm distributed feedback (DFB) lasers with long cavities. The tuning range is widened to over 3 nm by combining electric and thermal tuning effects. A flat FM response with an efficiency of over 1 GHz/mA from low to high (around 1 GHz) frequency is also achieved

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Lightwave Technology, Journal of  (Volume:7 ,  Issue: 10 )