Mode field diameter conversion fiber

Details Mode field diameter conversion fiber Mode field diameter conversion fiber

1993-05-14

1995-01-10

Bovernick, Rodney B.

Optical waveguides

Optical fiber waveguide with cladding

385142, G02B 610

Patent

active

053815033

ABSTRACT:
There is disclosed an optical waveguide comprising a core portion made of a light propagating material and a cladding portion, a first dopant and a second dopant being induced into said core portion, the first dopant having a function of increasing a refractive index of the light propagating material and having a first thermal diffusion coefficient to said light propagating material, the second dopant having a function of decreasing the refractive index of said light propagating material and having a second thermal diffusion coefficient to the light propagating material larger than the first thermal diffusion coefficient under a predetermined temperature.

REFERENCES:
patent: 4106850 (1978-08-01), Macatili
patent: 4447127 (1984-05-01), Cohen et al.
patent: 5206925 (1993-04-01), Nakazawa et al.
Shiraishi et al., "Beam Expanding Fiber Using Thermal Diffusion of the Dopant", IEEE, Aug. 1990, pp. 1151-1161.
Harper et al., "Tapers in Single-Mode Optical Fibre by Controlled Core Diffusion", Electronics Letters, 18th, Feb., 1988, vol. 24, No. 4, pp. 245-246.

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