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Title: Compact nonvolatile polarization switch using an asymmetric Sb 2 Se 3 -loaded silicon waveguide
We propose and simulate a compact (∼29.5 µm-long) nonvolatile polarization switch based on an asymmetric Sb2Se3-clad silicon photonic waveguide. The polarization state is switched between TM0and TE0mode by modifying the phase of nonvolatile Sb2Se3between amorphous and crystalline. When the Sb2Se3is amorphous, two-mode interference happens in the polarization-rotation section resulting in efficient TE0-TM0conversion. On the other hand, when the material is in the crystalline state, there is little polarization conversion because the interference between the two hybridized modes is significantly suppressed, and both TE0and TM0modes go through the device without any change. The designed polarization switch has a high polarization extinction ratio of > 20 dB and an ultra-low excess loss of < 0.22 dB in the wavelength range of 1520-1585 nm for both TE0and TM0modes.  more » « less
Award ID(s):
2003509
PAR ID:
10473676
Author(s) / Creator(s):
; ; ; ;
Publisher / Repository:
Optica
Date Published:
Journal Name:
Optics Express
Volume:
31
Issue:
6
ISSN:
1094-4087
Page Range / eLocation ID:
10684
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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