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

Koch, T. L.; Bridges, T. J.; Burkhardt, E. G.; Corvini, P. J.; Coldren, L. A.; Linke, R. A.; Tsang, W. T.; Logan, R. A.; Johnson, L. F.; Kazarinov, R. F.; Yen, R.; Wilt, D. P.
July 1985
Applied Physics Letters;7/1/1985, Vol. 47 Issue 1, p12
Academic Journal
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.


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