Fiber grating and fiber optic devices using the same

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The present invention relates to a fiber grating which introduces a plurality of asymmetric microbends in a fiber. The present invention also relates to fiber optic devices, such as a fiber-optic filter, a fiber-optic polarizer, a fiber-optic wavelength tunable bandpass filter, a fiber-optic frequency shifter, using the above fiber grating which has asymmetric mode-coupling characteristics. The optical devices of the present invention exhibit a high mechanical durability and a long-term stability of the device, degradation of the optical fiber device due to a change in the characteristics of the grating can be prevented even after a long time at high temperature. In particular, the fiber grating according to the present invention has asymmetric mode coupling characteristics, so that it can be prevalently applied to an optical fiber notch filter, an optical fiber polarizer, an optical fiber wavelength tunable bandpass filter, an optical fiber frequency shifter and so on.
Assignee
KAIST ,Donam Systems Inc.
Country
US (United States)
Issue Date
2002-08-06
Application Date
2000-01-10
Application Number
09462603
Registration Date
2002-08-06
Registration Number
6430342
URI
http://hdl.handle.net/10203/233814
Appears in Collection
PH-Patent(특허)
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