250 kHz spectral linewidth operation of 1.5 μm multiple quantumwell DFB-LDs |
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| Authors: | Kitamura M. Yamazaki H. Sasaki T. Kida N. Hasumi H. Mito I. |
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| Affiliation: | NEC Corp., Kamasaki; |
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| Abstract: | The spectral linewidth observed in a 1.5 μm multiple-quantum-well distributed-feedback laser diode (MQW-DFB-LD) with 1500 μm cavity length is discussed. The spectral linewidth was drastically reduced in long-cavity MQW-DFB0-LDs through a reduction in threshold carrier density. A spectral linewidth of 250 kHz, the narrowest ever achieved, was obtained |
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