Compact, Angled Polarization Splitter: Characterization of Broadband Performance and Fabrication Tolerance
Yannick D'Mello,Eslam El-Fiky,James Skoric,Amar Kumar,Michael Hui,Yun Wang,Laurent Guenin,David Patel,David V. Plant +8 more
TLDR
In this paper, the authors proposed a broadband polarization beam splitter on the silicon-on-insulator platform using the concept of multimode interference, where the angle between the input waveguide and the multimode interferometer was optimized in order to extract the images corresponding to the fundamental transverse electric (TE) and transverse magnetic (TM) polarizations from a single, compact MMI.Abstract:
We propose and experimentally demonstrate a broadband polarization beam splitter on the silicon-on-insulator platform using the concept of multimode interference. The angle between the input waveguide and the multimode interferometer (MMI) was optimized in order to extract the images corresponding to the fundamental transverse electric (TE) and transverse magnetic (TM) polarizations from a single, compact MMI. By changing the direction of propagation, the input angle enabled the addition of a parallelepiped to facilitate exclusively TM collection above the MMI, therefore eliminating the need to cascade successive MMIs. The MMI was tapered to improve coupling at the ports. The design allowed for a compact geometry with a length of 67.5 μm and width of 4 μm, while maintaining a feature size comparable to the waveguide width. The design was experimentally characterized over 72 parameter variations, including input angle, output TM and TE port positions, and bend radius of the output TE waveguide. The performance was consistent over the 100 nm wavelength range of 1500–1600 nm, with an average insertion loss of 2 dB. The device maintained an extinction ratio of at least 13.96 and 11.45 dB in the C-band for the TE and TM polarizations, respectively.read more
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Fundamentals of optical waveguides
TL;DR: Theorems and Formulas used in this chapter relate to theorems in optical waveguides and lightwave Circuits that describe the behaviour of Planar Waveguides through the response of the E-modulus effect.
Journal ArticleDOI
Integrated polarisation handling devices
Ghulam Saber,Luhua Xu,Rakibul Hasan Sagor,Yun Wang,Amar Kumar,Deng Mao,Eslam El-Fiky,Eslam El-Fiky,David Patel,Alireza Samani,Zhenping Xing,Maxime Jacques,Yannick D'Mello,David V. Plant +13 more
TL;DR: In this paper, the authors provide an overview of the recent work on developing polarisation handling devices such as polarisation beam splitters and polarisers in indium phosphide and silicon-on-insulator platforms for optical communications and sensing applications.
Journal ArticleDOI
Low-loss and ultra-broadband silicon nitride angled MMI polarization splitter/combiner.
TL;DR: The property of self-imaging combined with the polarization birefringence of the angled multimode waveguide is used to design a silicon nitride (SiN) polarization splitter (PS) at λ ∼ 1550 nm, which exhibits nearly wavelength independent performance over the C+L bands.
Journal ArticleDOI
Compact silicon-based TM-pass/TE-divide polarization beam splitter using contra-directional grating couplers assisted by horizontal slot waveguide
Zhengying Xu,Tao Lyu,Xiaohan Sun +2 more
TL;DR: In this paper, a compact silicon-based TM-pass/TE-divide polarization beam splitter based on CDGCs is proposed, where two identical corrugated strip waveguides are located at both sides of a central slot waveguide with corrugations on the bottom silicon layer.
Journal ArticleDOI
Ultracompact and broadband mid-infrared polarization beam splitter based on an asymmetric directional coupler consisting of GaAs–CaF2 hybrid plasmonic waveguide and GaAs nanowire
TL;DR: In this paper, an asymmetric directional coupler (DC) based on a GaAs-CaF2 hybrid plasmonic waveguide and GaAs nanowire was designed for the mid-infrared polarization beam splitter (PBS).
References
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