title: PLC-based LP₁₁ mode rotator for mode-division multiplexing transmission.
abstract: A PLC-based LP11 mode rotator is proposed. The proposed mode rotator is composed of a waveguide with a trench that provides asymmetry of the waveguide. Numerical simulations show that converting LP11a (LP11b) mode to LP11b (LP11a) mode can be achieved with high conversion efficiency (more than 90%) and little polarization dependence over a wide wavelength range from 1450 nm to 1650 nm. In addition, we fabricate the proposed LP11 mode rotator using silica-based PLC. It is confirmed that the fabricated mode rotator can convert LP11a mode to LP11b mode over a wide wavelength range.
authors.forename: Kunimasa
authors.initials: K
authors.lastname: Saitoh
authors.forename: Takui
authors.initials: T
authors.lastname: Uematsu
authors.forename: Nobutomo
authors.initials: N
authors.lastname: Hanzawa
authors.forename: Yuhei
authors.initials: Y
authors.lastname: Ishizaka
authors.forename: Kohei
authors.initials: K
authors.lastname: Masumoto
authors.forename: Taiji
authors.initials: T
authors.lastname: Sakamoto
authors.forename: Takashi
authors.initials: T
authors.lastname: Matsui
authors.forename: Kyozo
authors.initials: K
authors.lastname: Tsujikawa
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Yamamoto