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DFB-DCPBH InGaAsP/InP lasers for 1550 nm optical communication systems

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6 Author(s)
Neto, R.A. ; de Faria, I.F., Jr. ; Sachs, A.C. ; de Carvalho, W., Jr.
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Room-temperature CW (continuous-wave) operation of distributed feedback (DFB) double channel planar buried heterostructure (DCPBH) InGaAsP, InP lasers emitting in the 1550-nm wavelength region has been achieved. Lasing characteristics and wave propagation in a five-layer DFB waveguide were analyzed to design low threshold current and stable single longitudinal/transversal mode operation. DFB-DCPBH structures with second-order corrugation were prepared by a two-step liquid-phase epitaxial growth process. A threshold current of 50 mA at 25°C and stable single longitudinal mode operation over a wide range of driving current and temperature have been obtained. Linewidth was measured both in DC conditions and in modulated conditions up to 500 MHz

Published in:
Telecommunications Symposium, 1990. ITS '90 Symposium Record., SBT/IEEE International

Date of Conference: 3-6 Sep 1990

Page(s):
446 - 453
Meeting Date :
03 Sep 1990-06 Sep 1990
INSPEC Accession Number:
4132138
Conference Location :
Rio de Janeiro
Digital Object Identifier :
10.1109/ITS.1990.175645

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