Optical switching system and devices using a long period grating

Details Optical switching system and devices using a long period grating Optical switching system and devices using a long period grating

1995-12-14

1997-07-08

Ngo, John

Optical waveguides

With optical coupler

Input/output coupler

385144, 385142, G02B 626

Patent

active

056470398

ABSTRACT:
The present invention provides an optical switching system for use with an optical fiber that has a core of a prescribed refractive index and a cladding and that is configured to carry an optical signal of a prescribed bandwidth. Preferably, the optical fiber's core includes a photosensitive dopant. In a preferred embodiment, the optical switching system comprises an optical switch coupled to the optical fiber and includes a grating within the core. The optical switch has selectable non-diverting and forward-diverting modes of operation wherein the optical switch alters the prescribed refractive index: to render the grating substantially transparent to the optical signal as the optical switch operates in the non-diverting mode or, alternatively, to allow the grating to divert at least a portion of the optical signal forward and into the cladding as the optical switch operates in the forward-diverting mode. The grating rating preferably has a periodicity that increases a sensitivity of the grating to changes in the refractive index.

REFERENCES:
patent: 5042897 (1991-08-01), Meltz et al.
patent: 5042898 (1991-08-01), Morey et al.
patent: 5048913 (1991-09-01), Glenn et al.
patent: 5235657 (1993-08-01), Tardy
patent: 5412496 (1995-05-01), Nakajima et al.
patent: 5430817 (1995-07-01), Vengsarkar

Affiliated with

Also associated with

Rating

Optical switching system and devices using a long period grating 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 switching system and devices using a long period grating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical switching system and devices using a long period grating will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2413500