Fiber optic switch using polished-type directional coupler

Optical waveguides – With optical coupler – Switch

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

385 25, G02B 626, G02B 642

Patent

active

055464840

ABSTRACT:
A fiber optic switch module that can be incorporated into switch designs characterized by negligible crosstalk. The switch module is capable of operation over two wavelength bands. A 2.times.2 switch module has an open or bar state in which polished portions of the fiber segments are separated from each other and a closed or cross state where the polished portions are in optical contact with each other. The module has arbitrarily low crosstalk in the bar state, but typically some crosstalk in the cross state. In one embodiment, the third port of a first 2.times.2 module is coupled to the first port a second 2.times.2 module while no connections are-made to the second ports of the modules or to the third port of the second module. Fiber parameters (core radius and numerical aperture) and fabrication parameters (radius of curvature of the fibers in the interaction region and minimum edge-to-edge spacing between the fiber cores) are chosen so that the switch module has high coupling ratio (close to unity) in two distinct wavelength bands.

REFERENCES:
patent: 5011251 (1991-04-01), Miller et al.
patent: 5148503 (1992-09-01), Skeie

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Fiber optic switch using polished-type directional coupler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fiber optic switch using polished-type directional coupler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber optic switch using polished-type directional coupler will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1055527

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.