Polarization insensitive 1D grating coupler based on a zero-birefringence subwavelength corelet waveguide

Posted on 22.06.2022 - 21:05
Grating coupler devices provide efficient, foundry-compatible vertical fiber-to-chip coupling solutions in integrated photonic platforms. However, standard grating coupler designs are highly polarization sensitive, which hinders their adoption. We present a new type of 1D polarization insensitive grating coupler (PIGC) that is based on a zero-birefringence subwavelength "corelet" waveguide. We demonstrate a PIGC for coupling in the telecommunications O-band in a 45 nm-node monolithic SOI CMOS electronic-photonics platform, with measured insertion losses of 6.7 and 6.1 dB to transverse-electric and transverse-magnetic polarizations respectively, and a ±1 dB polarization dependent loss bandwidth of 73 nm.

CITE THIS COLLECTION

Zhang, Bohan; Schiller, Mark; Al Qubaisi, Kenaish; Onural, Deniz; Khilo, Anatoly; Naughton, Michael; et al. (2022): Polarization insensitive 1D grating coupler based on a zero-birefringence subwavelength corelet waveguide. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.5909648.v3
or
Select your citation style and then place your mouse over the citation text to select it.

SHARE

email

Usage metrics

Optics Letters

AUTHORS (7)

Bohan Zhang
Mark Schiller
Kenaish Al Qubaisi
Deniz Onural
Anatoly Khilo
Michael Naughton
Milos Popovic
need help?