Abstract

We propose and demonstrate a port-alternated switch-and-select architecture for planar waveguide-based optical switches. The proposed architecture reduces the number of intersections on a path, which leads to both small insertion loss and small path dependence. We demonstrate an 8 × 8 optical switch based on the proposed architecture using a silicon photonic platform, which exhibits a fiber-to-fiber insertion loss of 5.7 dB with a crosstalk below −30 dB. We discuss the scalability of the switch, including the propagation and bend losses of the waveguides.

Ultra-compact 8 × 8 strictly-non-blocking Si-wire PILOSS switch

Keijiro Suzuki, Ken Tanizawa, Takashi Matsukawa, Guangwei Cong, Sang-Hun Kim, Satoshi Suda, Morifumi Ohno, Tadashi Chiba, Hirofumi Tadokoro, Masashi Yanagihara, Yasushi Igarashi, Meishoku Masahara, Shu Namiki, and Hitoshi Kawashima
Opt. Express 22(4) 3887-3894 (2014)

Novel polarization diversity without switch duplication of a Si-wire PILOSS optical switch

Ken Tanizawa, Keijiro Suzuki, Kazuhiro Ikeda, Shu Namiki, and Hitoshi Kawashima
Opt. Express 24(7) 6861-6868 (2016)

Four-port mode-selective silicon optical router for on-chip optical interconnect

Hao Jia, Ting Zhou, Xin Fu, Jianfeng Ding, Lei Zhang, and Lin Yang
Opt. Express 26(8) 9740-9748 (2018)

Broadband silicon photonics 8 × 8 switch based on double-Mach–Zehnder element switches

Keijiro Suzuki, Ken Tanizawa, Satoshi Suda, Hiroyuki Matsuura, Takashi Inoue, Kazuhiro Ikeda, Shu Namiki, and Hitoshi Kawashima
Opt. Express 25(7) 7538-7546 (2017)

Ultra-compact 32 × 32 strictly-non-blocking Si-wire optical switch with fan-out LGA interposer

Ken Tanizawa, Keijiro Suzuki, Munehiro Toyama, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Toshio Sugaya, Satoshi Suda, Guangwei Cong, Toshio Kimura, Kazuhiro Ikeda, Shu Namiki, and Hitoshi Kawashima
Opt. Express 23(13) 17599-17606 (2015)