Effect Of Fluid Immersion And Hydrostatic Pressure On The Performance Of Single Mode, Injection Laser Diodes

Graham A. Garcia

doi:10.1117/12.933323

15 October 1982 Effect Of Fluid Immersion And Hydrostatic Pressure On The Performance Of Single Mode, Injection Laser Diodes

Graham A. Garcia

Author Affiliations +

Proceedings Volume 0326, Fiber Optics: Technology '82; (1982) https://doi.org/10.1117/12.933323
Event: 1982 Los Angeles Technical Symposium, 1982, Los Angeles, United States

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.

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Graham A. Garcia "Effect Of Fluid Immersion And Hydrostatic Pressure On The Performance Of Single Mode, Injection Laser Diodes", Proc. SPIE 0326, Fiber Optics: Technology '82, (15 October 1982); https://doi.org/10.1117/12.933323

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KEYWORDS

Refractive index

Semiconductor lasers

Switching

Reflectivity

Fiber optics

Gallium arsenide

Glasses

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