Fiber device having variable refractive index region proximal th

Details Fiber device having variable refractive index region proximal th Fiber device having variable refractive index region proximal th

1998-09-24

2000-11-21

Palmer, Phan T. H.

Optical waveguides

Accessories

Attenuator

385 37, 385 12, 385 10, 385122, 385123, 385124, G02B 600

Patent

active

061514381

ABSTRACT:
A device for changing the power levels of signals transmitted by an optical fiber, along with signal modulation and wavelength routing, comprises a length of optical fiber in which for a predetermined section of the length of the fiber, the fiber core is surrounded by a cladding having one or more variable refractive index (VRI) regions disposed therein in close proximity to the core. The VRI regions are fabricated with a material having an index of refraction higher than that of the cladding and may comprise a variable attenuator.

REFERENCES:
patent: 5082345 (1992-01-01), Cammons et al.
patent: 5319733 (1994-06-01), Emmons et al.

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