Optical equalizer for intersymbol interference mitigation

Details Optical equalizer for intersymbol interference mitigation Optical equalizer for intersymbol interference mitigation

2007-12-11

2007-12-11

Doan, Jennifer (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling function

C385S015000

Reexamination Certificate

active

10922690

ABSTRACT:
A multi-channel optical equalizer for intersymbol interference mitigation compensates for single- or multi-wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer also compensates for overshoots and signal transition degradations in semiconductor optical amplifiers. The equalizer unit uses one control signal for magnitude and one to control signal phase. The equalizer includes a controllable coupling ratio coupler for splitting the light into two portions and a controllable interferometer having two arms, one arm having an additional delay which is equal to an integer multiple of 1/Δf, where Δf is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal. A multistage optical equalizer is implemented using a plurality of optical signal equalizers.

REFERENCES:
patent: 6400870 (2002-06-01), Hill et al.
patent: 6785446 (2004-08-01), Chandrasekhar et al.
patent: 6804434 (2004-10-01), Chandrasekhar et al.
T. Chiba et al, entitled “Chromatic dispersion free Fourier transform-based wavelength splitters for D-WDM,” published in the Fifth Optoelectronics and Communications Conference(OECC 2000), Technical Digest, Jul. 2000.

Affiliated with

Also associated with

Rating

Optical equalizer for intersymbol interference mitigation 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 equalizer for intersymbol interference mitigation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical equalizer for intersymbol interference mitigation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3886302