Optical tapping filters employing long period gratings

Details Optical tapping filters employing long period gratings Optical tapping filters employing long period gratings

1995-02-24

1996-08-27

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling function

385 37, 385 50, 385126, G02B 634

Patent

active

055509401

ABSTRACT:
In accordance with the invention, an optical filter comprises a plurality of optical fibers having a coupling region where the axially extending cores are closely spaced within a common cladding. The coupling region includes a long period grating for selectively shifting light of selected wavelengths from guided modes into non-guided modes. These non-guided modes are picked up by an adjacent core and light of the selected wavelengths is thus shifted from one core to another. The result is an optical filter particularly useful as a demultiplexer or a tapping device. In one embodiment the grating is formed in one of the cores. In an alternative embodiment, it is formed in the common cladding.

REFERENCES:
patent: 4737007 (1988-04-01), Alferness et al.
patent: 5150439 (1992-09-01), Hill et al.
J. L. Archambault, et al. "Novel channel-dropping filter by grating-frustrated coupling in single-mode optical fiber", OFC Technical Digest p. 51 (1994). Feb.

Affiliated with

Also associated with

Rating

Optical tapping filters employing long period gratings does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical tapping filters employing long period gratings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical tapping filters employing long period gratings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1062363