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Realisation of flat FM response by directly modulating a phase tunable DFB laser diode

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5 Author(s)
Yamazaki, S. ; NEC Corporation, Opto-Electronics Research Laboratories, Kawasaki, Japan ; Emura, K. ; Shikada, M. ; Yamaguchi, M.
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Flat and efficient FM responses in a wide frequency range were obtained by directly modulating the injection current of a 1.3 ¿m phase-tunable DFB-DC-PBH laser diode. The FM response is flat between 1 kHz and 300 MHz, and the nor malised frequency deviation is 1¿3 GHz/mA, which is 5¿10 times larger than that of a conventional laser diode in the several hundred megahertz region.

Published in:

Electronics Letters  (Volume:21 ,  Issue: 7 )