title: Optical delay interferometer based on phase shifted fiber Bragg grating with optically controllable phase shifter.
abstract: We propose a novel optical delay interferometer (ODI) with an optically controllable phase shifter. The proposed interferometer is implemented by using a phase shifted fiber Bragg grating and an Yb(3+)/Al(3+) co-doped optical fiber. The phase of the delayed optical signal is linearly controlled by adjusting the induced pumping power of a laser diode at 976 nm. Polarization dependent loss, polarization dependent center wavelength shift and temperature induced center wavelength shift of the ODI are 0.044 dB, 6 pm, and 9.8 pm/ degrees C, respectively.
authors.forename: Tae-Young
authors.initials: TY
authors.lastname: Kim
authors.forename: Masanori
authors.initials: M
authors.lastname: Hanawa
authors.forename: Sun-Jong
authors.initials: SJ
authors.lastname: Kim
authors.forename: Swook
authors.initials: S
authors.lastname: Hann
authors.forename: Yune Hyoun
authors.initials: YH
authors.lastname: Kim
authors.forename: Won-Taek
authors.initials: WT
authors.lastname: Han
authors.forename: Chang-Soo
authors.initials: CS
authors.lastname: Park