title: On-chip grating coupler array on the SOI platform for fan-in/fan-out of MCFs with low insertion loss and crosstalk.
abstract: We report the design and fabrication of a compact multi-core fiber fan-in/fan-out using a grating coupler array on the SOI platform. The grating couplers are fully-etched, enabling the whole circuit to be fabricated in a single lithography and etching step. Thanks to the apodized design for the grating couplers and the introduction of an aluminum reflective mirror, a highest coupling efficiency of -3.8 dB with 3 dB coupling bandwidth of 48 nm and 1.5 dB bandwidth covering the whole C band, together with crosstalk lower than -32 dB are demonstrated.
authors.forename: Yunhong
authors.initials: Y
authors.lastname: Ding
authors.forename: Feihong
authors.initials: F
authors.lastname: Ye
authors.forename: Christophe
authors.initials: C
authors.lastname: Peucheret
authors.forename: Haiyan
authors.initials: H
authors.lastname: Ou
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Miyamoto
authors.forename: Toshio
authors.initials: T
authors.lastname: Morioka