On-chip grating coupler array on the SOI platform for fan-in/fan-out of MCFs with low insertion loss and crosstalk

Yunhong Ding (1) , Feihong Ye (1) , Christophe Peucheret (2) , Haiyan Ou (1) , Yutaka Miyamoto (3) , Toshio Morioka (1)

1 DTU Fotonik - Department of Photonics Engineering
2 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
3 NTT Network Innovation Laboratories

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.

Domaines: Optique / photonique; Optique [physics.optics]

Yunhong Ding, Feihong Ye, Christophe Peucheret, Haiyan Ou, Yutaka Miyamoto, et al.. On-chip grating coupler array on the SOI platform for fan-in/fan-out of MCFs with low insertion loss and crosstalk. Optics Express, 2015, 23 (3), pp.3292-3298. ⟨10.1364/OE.23.003292⟩. ⟨hal-01114782⟩