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Miniature packaged external-cavity semiconductor laser with 50 GHz continuous electrical tuning range

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7 Author(s)
Mellis, J. ; British Telecom Res. Labs., Ipswich ; Al-Chalabi, S.A. ; Cameron, K.H. ; Wyatt, R.
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Miniature, packaged, grating-external-cavity lasers have been developed for use in PSK and DPSK coherent transmission systems at 1.5 μm. The outside dimensions of the package are 30×30×50 mm and the optical cavity length is nominally 30 mm, resulting in a spectral linewidth <100 kHz. The lasing wavelength is mechanically adjustable over the range 1510-1560 nm and electrically tunable over the range of 0.8 nm. With appropriate control of the grating piezos, a continuous (hop-free) tuning range of 50 GHz (0.4 nm) can be obtained

Published in:

Electronics Letters  (Volume:24 ,  Issue: 16 )