title: Optical bit-pattern recognition by use of dynamic gratings in erbium-doped fiber.
abstract: We present a novel optical bit-pattern-recognition technique that uses erbium-doped fiber at room temperature. Counterpropagating beams write a patterned gain-depletion grating in pumped erbium-doped fiber. This grating, recorded in the erbium gain medium, can be used for correlation with other optical bit patterns. We have demonstrated correlation of arbitrary return-to-zero bit patterns of as many as 8 bits at 1 Gbit/s . Theory suggests that scaling to higher bit rates is feasible.
authors.forename: J S
authors.initials: JS
authors.lastname: Wey
authors.forename: D L
authors.initials: DL
authors.lastname: Butler
authors.forename: N W
authors.initials: NW
authors.lastname: Rush
authors.forename: G L
authors.initials: GL
authors.lastname: Burdge
authors.forename: J
authors.initials: J
authors.lastname: Goldhar