Author(s): Ye, H (Ye, Han); Han, Q (Han, Qin); Wang, SA (Wang, Shuai); Xiao, F (Xiao, Feng); Xiao, F (Xiao, Fan); Chu, YM (Chu, Yimiao); Geng, LY (Geng, Liyan)

Source: OPTICS COMMUNICATIONS Volume: 522 Article Number: 128672 DOI: 10.1016/j.optcom.2022.128672 Published: NOV 1 2022

Abstract: An optical 90 degrees hybrid monolithic with a 4-channel photodetector array is characterized and analyzed. The fabricated chip exhibits a phase error within +/- 10 degrees and a common rejection ratio exceeding 13.6 dB over 40 nm range in the L-band. A taper structure is adopted at hybrid inputs and outputs to improve phase error performance by 43.8% and fabrication error tolerance is analyzed numerically to well explain the deviations from theory.

Accession Number: WOS:000861749100012

ISSN: 0030-4018

eISSN: 1873-0310

Full Text: https://www.sciencedirect.com/science/article/pii/S0030401822004400?via%3Dihub