Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic
Patent
1997-12-29
2000-01-04
Lee, John D.
Optical waveguides
Directional optical modulation within an optical waveguide
Electro-optic
385 37, G02F 1295, G02B 634
Patent
active
060118814
ABSTRACT:
A tunable filter comprises either an internal or an external grating proximal to a variable index of refraction material. This variable index of refraction material may vary upon the application of an external electrical potential or the application of a change in temperature of the polymer. Additionally, the grating may comprise a periodic modulation of the index of refraction, this periodic modulation comprising an isoplanar modulation of the index of refraction at an angle to the central axis of the waveguide, thereby causing conversion of fundamental mode waves to second mode waves, and by reciprocity, conversion of second mode waves to fundamental mode waves.
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Black Richard James
Moslehi Behzad
Shaw Herbert John
Chesavage Jay A.
Ifos, Intelligent Fiber Optic Systems
Kang Juliana K.
Lee John D.
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