title: Broadband silicon photonics 8 × 8 switch based on double-Mach-Zehnder element switches.
abstract: We fabricated and characterized a silicon photonics 8 × 8 strictly non-blocking optical switch based on double-Mach-Zehnder (MZ) element switches. The double-MZ switches, each of which consisted of an intersection and two asymmetric MZ switches, enabled the suppression of crosstalk across a wide wavelength range. The 8 × 8 switch exhibited an average fiber-to-fiber insertion loss of 11.2 dB and -20 dB crosstalk in a bandwidth wider than 30 nm. Furthermore, we constructed an 8 × 8 polarization-diversity switch by using two 8 × 8 switches and demonstrated 32-Gbaud dual-polarization, quadrature-phase-shift-keying, four-channel wavelength-division-multiplexed signal transmission without significant signal degradation.
authors.forename: Keijiro
authors.initials: K
authors.lastname: Suzuki
authors.forename: Ken
authors.initials: K
authors.lastname: Tanizawa
authors.forename: Satoshi
authors.initials: S
authors.lastname: Suda
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsuura
authors.forename: Takashi
authors.initials: T
authors.lastname: Inoue
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Ikeda
authors.forename: Shu
authors.initials: S
authors.lastname: Namiki
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Kawashima