title: Arrayed waveguide Sagnac interferometer.
abstract: We present a novel device, an arrayed waveguide Sagnac interferometer, that combines the flexibility of arrayed waveguides and the wide application range of fiber or integrated optics Sagnac loops. We form the device by closing an array of wavelength-selective light paths provided by two arrayed waveguides with a single 2 x 2 coupler in a Sagnac configuration. The equations that describe the device's operation in general conditions are derived. A preliminary experimental demonstration is provided of a fiber prototype in passive operation that shows good agreement with the expected theoretical performance. Potential applications of the device in nonlinear operation are outlined and discussed.
authors.affiliation: Optical Communications Group, IMCO2 Research Institute, Universidad Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. jcapmany@dcom.upv.es
authors.forename: José
authors.initials: J
authors.lastname: Capmany
authors.forename: Pascual
authors.initials: P
authors.lastname: Muñoz
authors.forename: Salvador
authors.initials: S
authors.lastname: Sales
authors.forename: Daniel
authors.initials: D
authors.lastname: Pastor
authors.forename: Beatriz
authors.initials: B
authors.lastname: Ortega
authors.forename: Alfonso
authors.initials: A
authors.lastname: Martinez