title: Magneto-optic fiber Sagnac modulator based on magnetic fluids.
abstract: A magneto-optic modulator with a magnetic fluid film inserted into an optical fiber Sagnac interferometer is proposed. The magnetic fluid exhibits variable birefringence and Faraday effect under external magnetic field that will lead to a phase difference and polarization state rotation in the Sagnac interferometer. As a result, the intensity of the output light is modulated under the external magnetic field. Moreover, the modulator has a high extinction ratio and can easily be integrated in a single-mode fiber system. The performance of the modulator is not affected by ambient temperature variation from room temperature to 40 °C.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459.
authors.forename: Peng
authors.initials: P
authors.lastname: Zu
authors.forename: Chi Chiu
authors.initials: CC
authors.lastname: Chan
authors.forename: Lew Wen
authors.initials: LW
authors.lastname: Siang
authors.forename: Yongxing
authors.initials: Y
authors.lastname: Jin
authors.forename: Yifan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Liew Hwi
authors.initials: LH
authors.lastname: Fen
authors.forename: Lihan
authors.initials: L
authors.lastname: Chen
authors.forename: Xinyong
authors.initials: X
authors.lastname: Dong