Optical grating device with variable coating
First Claim
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1. An article comprising a grating device, the grating device comprising:
- a length of waveguide including a grating region comprising a plurality of spaced-apart grating elements;
a variable coating applied on the outer surface of the waveguide proximal the grating region, the coating having a variable outer geometry so that when an axial strain is applied to the waveguide the variable coating causes the spacings between the grating elements to change to a variable degree.
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Abstract
A tunable chromatic dispersion compensator for optical communication systems is disclosed. An optical grating, such as a fiber Bragg grating, non-chirped, linearly chirped or non-linearly chirped, is coated on its outer surface with a coating have a variable diameter and strained is applied to the fiber. The fiber may be latchably strained so that the grating characteristics may be changed or tuned while avoiding use of a continuous power supply. Various optical networking applications using such dispersion compensating devices are also disclosed.
63 Citations
20 Claims
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1. An article comprising a grating device, the grating device comprising:
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a length of waveguide including a grating region comprising a plurality of spaced-apart grating elements;
a variable coating applied on the outer surface of the waveguide proximal the grating region, the coating having a variable outer geometry so that when an axial strain is applied to the waveguide the variable coating causes the spacings between the grating elements to change to a variable degree. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification