title: Potential characterization of free-space-wave drop demultiplexer using cavity-resonator-integrated grating input/output coupler.
abstract: A prototype free-space-wave drop demultiplexer consisting of a cavity-resonator-integrated grating input/output coupler (CRIGIC) and a different-guided-mode-coupling distributed Bragg reflector (DGM-DBR) was designed for constructing a high-density wavelength-division-multiplexing intra-board chip-to-chip optical interconnection. The CRIGIC consists of one grating coupler and two DBRs, and can vertically couple a guided wave and a free-space wave with high efficiency. A two-channel drop demultiplexer operating at around 850-nm wavelength with 5-nm channel spacing in wavelength was fabricated in a thin-film SiO2-based waveguide. The device performance was predicted theoretically, characterized experimentally, and discussed.
authors.affiliation: National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan. kintaka.kenji@aist.go.jp
authors.forename: Kenji
authors.initials: K
authors.lastname: Kintaka
authors.forename: Katsuya
authors.initials: K
authors.lastname: Shimizu
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kita
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kawanami
authors.forename: Junichi
authors.initials: J
authors.lastname: Inoue
authors.forename: Shogo
authors.initials: S
authors.lastname: Ura
authors.forename: Junji
authors.initials: J
authors.lastname: Nishii