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1.55‐μm InGaAsP distributed feedback vapor phase transported buried heterostructure lasers

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12 Author(s)
Koch, T.L. ; AT&T Bell Laboratories, Holmdel, New Jersey 07733 ; Bridges, T.J. ; Burkhardt, E.G. ; Corvini, P.J.
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1.55‐μm single longitudinal mode InGaAsP distributed feedback (DFB) lasers have been fabricated using a vapor phase transported (VPT) buried heterostructure geometry on a liquid phase epitaxially grown broad area DFB base. Lasing thresholds in the 35–65‐mA range were obtained, with side mode suppression ratios as high as 39 dB under modulation. The VPT DFB laser has both a good high‐speed modulation capability and low wavelength chirping under high‐speed modulation, making it an attractive candidate for high bit rate, long‐haul optical fiber systems applications, with demonstrated record system performance at both 2 and 4 Gbit/s.

Published in:

Applied Physics Letters  (Volume:47 ,  Issue: 1 )

Date of Publication:

Jul 1985

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