Optical switch for reducing processing errors in a coupling regi

Details Optical switch for reducing processing errors in a coupling regi Optical switch for reducing processing errors in a coupling regi

1996-11-13

1998-10-27

Lee, John D.

Optical waveguides

Directional optical modulation within an optical waveguide

Electro-optic

385 16, 385 40, G02B 626

Patent

active

058287965

ABSTRACT:
An optical switch having reduced processing errors in a coupling region, according to the claimed invention includes an input portion having a pair of optical waveguides; an output portion having a pair of optical waveguides; a light phase shifting portion for inducing an additional phase change on light travelling in the input portion; a first light coupling waveguide for coupling between two light signals of the input portion and for providing a coupled signal with the light phase shifting portion; and a second light coupling waveguide for coupled between two light signals of the light phase shifting means and for providing a coupled signal with the output portion. The light coupling unit includes a waveguide. The switch reduces considerably any error that stems from manufacturing variations between waveguides in a coupling region since the waveguides share the error produced in a coupling region. The length of the switching element can be reduced since the coupled between waveguides is not indirect as in DC switches and BB switches. Due to the reduction in length, the output loss is reduced considerable.

REFERENCES:
patent: 4679893 (1987-07-01), Ramer
patent: 5078511 (1992-01-01), Noll et al.
patent: 5230028 (1993-07-01), Lin et al.
patent: 5309532 (1994-05-01), Chang et al.
High-Speed Polymeric 2.times.2 Electro-Optic Switches; J.I. Thackara, J.C. Chon, M. Jurich, and G.C. Bjorklund; pp. 283-284. (No Journal Name or Date).
A Beam Propagation Method Analysis of Active and Passive Waveguide Crossings; Andreas Neyer, Winfried Mevenkamp, Lars Thylen and Bo Lagerstrom; Jun. 1985; pp. 57-64, Journal of Lightwave Tech., vol. LT-3, No. 3.

Affiliated with

Also associated with

Rating

Optical switch for reducing processing errors in a coupling regi 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 switch for reducing processing errors in a coupling regi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical switch for reducing processing errors in a coupling regi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1620667