Fiber-optic tunable filter and intensity modulater

Details Fiber-optic tunable filter and intensity modulater Fiber-optic tunable filter and intensity modulater

2006-04-04

2006-04-04

Lee, John D. (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling function

C385S039000

Reexamination Certificate

active

07024072

ABSTRACT:
A fiber-optic tunable filter and an intensity modulator respectively includes: a fiber having a polished surface and an evanescent-field; and a photonic crystal having plural cavities and a filler filled therein and attached to the polished surface, wherein the plural cavities and the filler decide a photonic band-gap of the photonic crystal and the photonic band-gap is adjusted to reflect a light with a specific wavelength through the evanescent interaction with the photonic crystal material. Based on the fiber side-polishing technique, all kinds of fiber active and passive devices are able to be manufactured easily, especially for a high speed intensity modulator using an EO (Electro-Optic) polymer as the filler.

REFERENCES:
patent: 6944369 (2005-09-01), Deliwala
Barclay, P.E.; Srinivasan, K.; Borselli, M.; Painter, O. “Experimental Demonstration of Evanescent Coupling from an Optical Fibre Tapers to Photonic Crystal Waveguides.” Electronics Letters. vol. 39, Issue 11, May 29, 2003 Page(s):842-844.

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