Patent ID: 6151427
Filing Date: 2000-11-21
Classification: G02B,G02F

Abstract:
A tunable optic fiber bandpass filter using flexural acoustic waves, comprising:a) an optic fiber, having a core, having a cladding over the core, and having a buffer coating over the optic fiber where bandpass filtering does not occur;b) a first silica horn, having a first end attached to the optic fiber where no buffer coating is present, and having a second end;c) a first acoustic transducer attached to the second end of the first silica horn;d) a first signal generator attached to the first acoustic transducer;e) a first acoustic absorber deposited on the optic fiber at which no buffer coating is present and to the right of the first silica horn;f) a core blocker fabricated within the core of the optic fiber at which there is no buffer coating present and to the right of the first acoustic absorber;g) a second acoustic absorber deposited on the optic fiber at which there is no buffer coating and to the right of the core blocker;h) a second silica horn, having a first end attached to the optic fiber where no buffer coating is present and to the right of the second acoustic absorber, and having a second end;i) a second acoustic transducer attached to the second end of the second silica horn; andj) a second signal generator attached to the second acoustic transducer.