US 6,748,140 B1 · Method, system and apparatus for chromatic dispersion compensation utilizing a Gires-Tournois interferometer

Abstract

A method for compensating for chromatic dispersion of an optical signal includes: receiving the optical signal from an input fiber; collimating the optical signal using a collimator; delivering the collimated optical signal to a Gires-Tournois interferometer; reflecting a chromatic-dispersion-compensated optical signal from the Gires-Tournois interferometer to the collimator; focusing the chromatic-dispersion compensated optical signal into an output fiber. The compensator in accordance with the present invention provides flexibility in producing periodically varying chromatic dispersion so as to compensate for unwanted periodic chromatic dispersion produced in an interferometric interleaved channel separator. Also, the compensator enables compensation of fiber optic chromatic dispersion.

Claims22

Dependent claims

A method for compensating for chromatic dispersion of an optical signal, comprising the steps of:

(a) receiving the optical signal from an input fiber;
(b) collimating the optical signal using a collimator;
(c) delivering the collimated optical signal to a Gires-Tournois interferometer;
(d) reflecting a chromatic-dispersion-compensated optical signal from the Gires-Tournois interferometer to the collimator;
(e) focusing the chromatic-dispersion compensated optical signal into an output fiber.

2 more elements

A method for compensating for chromatic dispersion of an optical signal, comprising the steps of:

(a) delivering the optical signal from an input fiber to a first compensator of a plurality of optically coupled compensators;
(b) providing partial dispersion compensation to the optical signal using the first compensator;
(c) directing the optical signal to the next compensator of the plurality of compensators utilizing one of a plurality of optical couplings, wherein the plurality of optical couplings sequentially optically couples the plurality of compensators;
(d) providing partial dispersion compensation to the optical signal using the next compensator of the plurality of compensators;
(e) repeating steps (c) and (d) until the optical signal exits the last compensator of the plurality of compensators.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/271,418Filed 15 Oct 2002 · continuation

Priority

22 Nov 2000

Granted

8 Jun 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G02B 6/29394
Controlling dispersion: compensating wavelength dispersion
G02B 6/29349
Operating by wave or beam interference: michelson or Michelson/Gires-Tournois configuration, i.e. based on splitting and interferometrically…
G02B 6/29358
Operating by wave or beam interference: multiple beam interferometer external to a light guide, e.g. Fabry-Pérot, etalon, VIPA plate, OTDL plate,…
G02B 6/327
Having lens focusing means positioned between opposed fibre ends: with angled interfaces to reduce reflections

Method, system and apparatus for chromatic dispersion compensation utilizing a Gires-Tournois interferometer

Life of this patent

Method, system and apparatus for chromatic dispersion compensation utilizing a Gires-Tournois interferometer

Life of this patent

Abstract

Claims22