Long wavelength optical fiber communication and sensing systems

Details Long wavelength optical fiber communication and sensing systems Long wavelength optical fiber communication and sensing systems

G - Physics

02

B

88/97.2

G02B 6/10 (2006.01)

Patent

CA 1268972

- 22 - LONG WAVELENGTH OPTICAL FIBER COMMUNICATION AND SENSING SYSTEMS Abstract Optical communication and sensing systems are disclosed which operate at long wavelengths, i.e., wavelengths greater than about 2µm, but less than or equal to about 11µm. Each of these systems includes an optical fiber having material, such as a metal halide glass, which is substantially transparent to long wavelength electromagnetic radiation. These optical fibers exhibit reduced microdeformation and macrobending losses, as well as low total dispersions, at the long wavelengths. In contrast to currently held beliefs, this is achieved by using fiber designs involving relatively small relative refractive index differences, which are readily manufacturable and which avoid undesirable crystallization at core-cladding interfaces.

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