Optical fiber filter

Details Optical fiber filter Optical fiber filter

1997-06-17

1999-01-05

Palmer, Phan T. H.

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

385126, 385128, G02B 602, G02B 622

Patent

active

058570535

ABSTRACT:
The present applicant has discovered that an optical filter can be made by etching away part of the cladding of a depressed-cladding fiber. The etching produces a section of fiber having a double peak in the index profile. In a low index medium such as air, the remaining cladding portion guides radiation at certain wavelengths. This radiation is extracted from the radiation in the fiber core.

REFERENCES:
patent: 5359681 (1994-10-01), Jorgenson et al.
patent: 5673354 (1997-09-01), Akasaka et al.

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