Optical waveguides – With optical coupler – Switch
Patent
1997-07-31
1998-12-22
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Switch
385 37, 385 10, 372 6, 372102, 359283, 359251, G02B 642, G02B 626
Patent
active
058526889
ABSTRACT:
Method for optical energy transfer and energy guidance uses an electric field to control energy propagation using a class of poled structures in solid material. The poled structures, which may form gratings in thin film or bulk configurations, may be combined with waveguide structures. Electric fields are applied to the poled structures to control routing of optical energy. Techniques include frequency-selective switchable- and adjustable-tunable reflection, splitting, directional coupling, frequency-tunable switching and efficient beam combining, as well as polarized beam combining. Adjustable tunability is obtained by a poled structure which produces a spatial gradient in a variable index of refraction along an axis in the presence of a variable electric field. In one embodiment, the present invention is a method of switching a grating which consists of a poled material with an alternating domain structure of specific period. When an electric field is applied across the periodic structure, a Bragg grating is formed by the electro-optic effect, reflecting optical radiation with a certain bandwidth around a center wavelength. The grating may be used by itself, or in combination with other gratings to form integrated structures in a ferroelectric crystal. Specifically of interest is an method of using an integrated structure in which one or more optical waveguides interact with one or more periodic structures to form a wavelength selective integrated optic modulator, switch, or feedback element.
REFERENCES:
patent: 5504772 (1996-04-01), Deacon et al.
patent: 5581642 (1996-12-01), Deacon et al.
patent: 5586206 (1996-12-01), Brinkman et al.
patent: 5630004 (1997-05-01), Deacon et al.
patent: 5652817 (1997-07-01), Brinkman et al.
patent: 5703710 (1997-12-01), Brinkman et al.
patent: 5732177 (1998-03-01), Deacon et al.
Bischel William K.
Brinkman Michael J.
Deacon David A. G.
Field Simon J.
Allen Kenneth R.
Gemfire Corporation
Palmer Phan T. H.
LandOfFree
Method for manipulating optical energy using poled structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manipulating optical energy using poled structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manipulating optical energy using poled structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2054263