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Authors: R. Halir, D. Vermeulen, G. Roelkens
Title: Reducing polarization dependent loss of silicon-on-insulator fiber to chip grating couplers
Format: International Journal
Publication date: 3/2010
Journal/Conference/Book: IEEE Photonics Technology Letters
Volume(Issue): 22(6) p.389-391
DOI: 10.1109/lpt.2009.2039869
Citations: 28 ( - last update: 14/7/2024)
22 (OpenCitations - last update: 3/5/2024)
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For many telecommunication applications, low polarization-
dependent loss (PDL) operation is mandatory. On the
silicon-on-insulator photonic wire platform, this can be achieved
using polarization diversity configurations. However, as we show
here, when using two-dimensional grating couplers for near vertical
fiber input and output, the low PDL bandwidth is limited.We
propose and demonstrate the use of a phase shifter in one of the
arms of the polarization diversity circuit to effectively reduce PDL
(0.15-dB PDL is shown) and increase the low PDL bandwidth.

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