Self-tuning optical waveguide filter

Details Self-tuning optical waveguide filter Self-tuning optical waveguide filter

1997-02-19

1998-10-27

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling function

385122, 385123, 385142, G02B 626

Patent

active

058288023

ABSTRACT:
A self-tuning optical waveguide filter for attenuating a lower power light signal at .lambda..sub.1 more than a higher power signal at .lambda..sub.2 comprises a length of single core waveguide and a light injector for applying .lambda..sub.1, .lambda..sub.2 into the waveguide in two propagating modes subject to mode beating. The mode beating produces high intensity regions of .lambda..sub.1 physically displaced from high intensity regions of .lambda..sub.2. A portion of the waveguide is doped with a saturable absorber for disproportionately attenuating wavelengths at lower power levels. Advantageously the waveguide is a single-core fiber having its central core doped with rare-earth saturable absorber. In a preferred embodiment, the fiber is dimensioned to propagate .lambda..sub.1, .lambda..sub.2 in the LP.sub.01 and LP.sub.02 modes, and the saturable absorber is Erbium.

REFERENCES:
patent: 4778237 (1988-10-01), Sorin et al.
patent: 4781425 (1988-11-01), Risk et al.
Zervas, M.N., et al., "Twin-Core Fiber Erbium-Doped Channel Equalizer", 8217 Journal of Lightwave Technology, 13(1995) May, No. 5, New York, NY, US, pp. 721-731.

Affiliated with

Also associated with

Rating

Self-tuning optical waveguide filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-tuning optical waveguide filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-tuning optical waveguide filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1620706