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Proceedings Paper

Effect Of Fluid Immersion And Hydrostatic Pressure On The Performance Of Single Mode, Injection Laser Diodes
Author(s): Graham A. Garcia
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Paper Abstract

The undersea environment places special demans on the design of electro-optic and fiberotic systems. Encapsulation in hermetically sealed pressure containers is one solution to the problems associated with deployment at depth. An alternative approach which avoids the inconvenience of pressure containers and pressure hull penetrators is to operate the system in a fluid-filled, pressure equalized package which. subjects the components to the ambient pressure encountered at depth. The data presented here characterize the behavior of GaAlAs, single mode, injection laser diodes under conditions of fluid immersion and hydrostatic pressure. Fluid immersion affects laser operation primarily by reducing the end facet reflectivity and thereby raising the threshold current. Elevated hydrostatic pressure also resulted in increased threshold current due, to pressure induced changes in the band structure of the active layer material. Spectral changes were particularly evident with pressure induced mode hopping being the most significant effect.

Paper Details

Date Published: 15 October 1982
PDF: 5 pages
Proc. SPIE 0326, Fiber Optics: Technology '82, (15 October 1982); doi: 10.1117/12.933323
Show Author Affiliations
Graham A. Garcia, Naval Ocean Systems Center (United States)

Published in SPIE Proceedings Vol. 0326:
Fiber Optics: Technology '82
Claire E. Loscoe, Editor(s)

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