Grating optical fiber, and optical fiber base material suitable

Details Grating optical fiber, and optical fiber base material suitable Grating optical fiber, and optical fiber base material suitable

1999-02-22

2000-12-05

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385123, G02B 634

Patent

active

061577588

ABSTRACT:
A grating optical fiber comprises a core, a first clad layer formed around the core, and a second clad layer formed around the first clad. Germanium is doped in the core, while germanium and fluorine are doped in the first clad layer. Gratings are formed on both the core and the first clad layer. The difference between the indexes of refraction between the first and second clad layers is smaller than the difference between the indexes of refraction between the core and the first clad layer.

REFERENCES:
patent: 5757540 (1998-05-01), Judkins et al.
patent: 6067392 (2000-05-01), Wakami et al.

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