New DFB Laser Module With Optical Isolator For High Bit Rate Communication Systems

E. Grard; J. L. Beylat; A. Gateau; D. Mousseaux; J. P. Hebert; E. Duda

doi:10.1117/12.963362

5 January 1990 New DFB Laser Module With Optical Isolator For High Bit Rate Communication Systems

E. Grard, J. L. Beylat, A. Gateau, D. Mousseaux, J. P. Hebert, E. Duda

Proceedings Volume 1177, Integrated Optics and Optoelectronics; (1990) https://doi.org/10.1117/12.963362
Event: OE/FIBERS '89, 1989, Boston, United States

Abstract

For high bit rate and long distances numerical transmission systems, or for analog broad band applications, a stable single longitudinal mode operation of semiconductor laser diode is required. Distributed Feedback lasers (DFB) are very interesting for this type of system. However, the optical feedback, due to Rayleigh backscattering, and light reflected by the fiber and the coupling circuit can disturb the good operation of the diode 1. In order to overcome this problem and to limit the system penalty induced by the optical feedback, two ways are possible and complementary. First, optimize parameters of the laser diode structure 1, 2. A second way is to introduce an optical isolator inside the laser module.

Citation Download Citation

E. Grard, J. L. Beylat, A. Gateau, D. Mousseaux, J. P. Hebert, and E. Duda "New DFB Laser Module With Optical Isolator For High Bit Rate Communication Systems", Proc. SPIE 1177, Integrated Optics and Optoelectronics, (5 January 1990); https://doi.org/10.1117/12.963362

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