Design and Optimization of Polarization Splitting and Rotating Devices in Silicon-on-Insulator Technology

Troia, Benedetto; Leonardis, Francesco De; Lanzafame, Mauro; Muciaccia, Tommaso; Grasso, Giuseppe; Giannoccaro, Giovanni; Campanella, Carlo Edoardo; Passaro, Vittorio M. N.

doi:10.1155/2014/490405

Cited by 15 publications

(12 citation statements)

References 55 publications

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“…4 The key elements for realizing the polarizationdiversity are polarization beam splitters (PBSs) 5,6 and rotators (PSRs). 7,8 Many types of siliconwaveguide PBSs and PSRs have been reported based on various structures, including directional coupler, 9,10 multimode interference (MMI), 11 hybrid plasmonic waveguide, 12 grating, 13 photonic crystal, 14 and so on.…”

mentioning

confidence: 99%

Ultra-compact and highly efficient silicon polarization splitter and rotator

Zhang

Jiang

et al. 2016

APL Photonics

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We propose and experimentally demonstrate an ultra-compact and highly efficient polarization splitter and rotator based on a silicon bent directional coupler structure. The TM-to-TE cross-polarization coupling occurs between the two parallel bent waveguides, if the phase matching condition is satisfied. Efficient polarization splitting and rotating are simultaneously achieved. The device is fabricated by a single step of exposure and etching. The measured peak TM-to-TE polarization conversion efficiency reaches 96.9%. The TM-to-TE conversion loss is lower than 1 dB in the wavelength range of 1544 nm–1585 nm, and the insertion loss for the TE polarization is lower than 0.3 dB in the wavelength regime of 1530 nm–1600 nm. The cross talk values are lower than −20 and −18 dB for the TE- and TM-polarizations over a wavelength range of 70 nm, respectively. The coupling length of the polarization splitter and rotator is 8.77μm. To the best of our knowledge, our device achieves the shortest coupling length.

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confidence: 99%

Ultra-compact and highly efficient silicon polarization splitter and rotator

Zhang

Jiang

et al. 2016

APL Photonics

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“…Hence, integrated receivers need to be insensitive to polarization to avoid timevarying losses and high bit error rates (BERs). Such receivers based on silicon on insulator (SOI) have used the polarization diversity technique with a combination of splitters and rotators [1], [2]. The TM output port of the polarization splitter has an inserted rotator which rotates the electric field by 90 • , converting the TM 00 mode into a TE 00 mode.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects

Caut,

Shekhawat,

Torres-Company

et al. 2024

IEEE Photonics J.

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This paper demonstrates with FDTD simulations a silicon nitride polarization independent coarse wavelength division multiplexing (CWDM) receiver platform based on square waveguides for optical interconnects at 1 𝜇m. Here, the channel spacing of the demultiplexers is much smaller than standard CWDM systems (25 nm) and is set to 8 nm. To avoid high waveguide propagation and radiation losses, several waveguide dimensions were considered. The 450 nm (width) x 450 nm (height) waveguide presented a good tradeoff between low loss and single-mode behavior and was therefore selected. The demultiplexer has a simulated polarization dependence on the waveguide's width variations of 0.17 nm/nm. In addition, we present edge coupler designs with coupling loss within 2.5 dB for TE and TM polarization.

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“…Based on the highly sophisticated silicon semiconductor technology, silicon photonics could provide us with an economical, highly integrated, electronic-photonic platform, in which ultra-compact photonic devices and electronic circuits are converged [1][2][3][4][5][6][7][8]. However, Si nanowire waveguides (WGs) have high structural birefringence, which results in large polarization-mode dispersion (PMD) and polarization dependent loss [9,10]. In order to compensate for PMD, there is an approach which involves a precise fabrication accuracy of 1 nm [11].…”

Section: Introductionmentioning

confidence: 99%

Compact design of a polarization beam splitter based on silicon-on-insulator platform

2018

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In this paper, a compact design of a polarization beam splitter is proposed, based on the principle of a directional coupler. A bridge waveguide is placed between two conventional silicon waveguide directional couplers. The optimized length of the bridge waveguide is obtained at 11 µm, where the directional coupler acts as a polarization beam splitter. As a result, maximum polarization extinction ratios of 20.32 dB and 15.4 dB are obtained for the TE-and TM-modes, respectively, at a 1536 nm wavelength.

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Design and Optimization of Polarization Splitting and Rotating Devices in Silicon-on-Insulator Technology

Cited by 15 publications

References 55 publications

Ultra-compact and highly efficient silicon polarization splitter and rotator

Ultra-compact and highly efficient silicon polarization splitter and rotator

Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects

Compact design of a polarization beam splitter based on silicon-on-insulator platform

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