Design and Performance Study of a Compact SOI Polarization Rotator at 1.55 μm

Barh, Ajanta; Rahman, B. M. A.; Varshney, R. K.; Pal, Bishnu P.

doi:10.1109/jlt.2013.2286859

Cited by 42 publications

(8 citation statements)

References 20 publications

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“…In this case, the phase matching h moves from h = 107 nm for isolated or weakly coupled guides to h = 120 nm, which is due to the strong coupling. The coupling length can be defined as Lc = π/(βeven-βodd) [29] where βeven and βodd are the propagation constants of the even and odd supermodes, respectively. Variations of coupling length with the height (h) of the Poly-Si layer are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Multi-Poly-Silicon-Layer-Based Spot-Size Converter for Efficient Coupling Between Silicon Waveguide and Standard Single-Mode Fiber

et al. 2016

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A novel spot-size converter (SSC) incorporating phase matched polycrystalline-silicon (Poly-Si) multi-layer is proposed and optimised for efficient nanophotonic coupling, which can be fabricated by using the CMOS compatible process and can be directly integrated. An efficient algorithm, combining the rigorous H-field based full-vectorial finite element method and the least squares boundary residual method, is developed for the design optimization of the SSC. Use of simple single layer and multi-layer Poly-Si based SSCs are investigated, in which the coupling process, phase matching for isolated and composite waveguides are also carried out. The coupling loss can be reduced to 2.72 dB by using an eleven Poly-Si layers based SSC. The on-chip integrated SSC opens up the feasibility of a low cost passive aligned fiber-pigtailed electronic-photonics integrated circuits platform.

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Section: Resultsmentioning

confidence: 99%

Multi-Poly-Silicon-Layer-Based Spot-Size Converter for Efficient Coupling Between Silicon Waveguide and Standard Single-Mode Fiber

et al. 2016

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“…The design presented here uses two simple silicon nanowires, which would be simpler than the design approaches reported earlier by using slot waveguides [12][13][14][15]. As this structure does not consider any bend section or slanted side wall [8][9][10] or trench with different etching depth [11], it would be simpler to fabricate using a single mask.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, it can rotate only one polarization state for one input direction. Simpler PR by using vertical slots guides have also been reported [13,14,15]. Three WGs-based polarization splitter and rotator have also been reported [16].…”

Section: Introductionmentioning

confidence: 96%

Design of compact polarization rotator using simple silicon nanowires

Soudi¹,

Rahman²

2014

Appl. Opt.

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This is the accepted version of the paper.This version of the publication may differ from the final published version. In this paper, an ultra-compact design of polarization rotator based on silicon-on-insulator platform is presented, which contains two simple silicon nanowires but with unequal in width, which will be easier to fabricate. It is shown here that a low-loss, wide bandwidth and 52.8 m long compact Polarization rotator with polarization cross-talk -20 dB can be achieved. A full-vectorial finite element method and the least squares boundary residual method are used to study the effects of the fabrication tolerances and this design shows reasonably stable performances. Permanent

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“…Since the cross-section of the proposed PBS has a multi-layer boundary, it is essential to accurately find the isolated mode and supermode profiles of the horizontal triple-slot waveguides. The VFEM based on the H-field can serve as a powerful method to calculate the effective indices and modal fields for the horizontal triple-slot waveguides based PBS [30,31]. This VFEM is one of the most rigorous methods to characterize the horizontal triple-slot waveguides as the H field is naturally continuous at the interfaces.…”

Section: Theorymentioning

confidence: 99%

Compact and fabrication-tolerant polarization splitter based on horizontal triple-slot waveguide

2017

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A compact and fabrication-tolerant polarization beam splitter (PBS) based on the horizontal triple-slot waveguides is proposed and optimized by using the rigorous H-field-based full-vectorial finite element method and the least-squares boundary residual method. It can be noted from the simulation results that a fabrication-tolerant PBS with a compact length of 33 μm can be yielded based on the horizontal triple-slot waveguides. The polarization extinction ratios are -21.8 and -20.3 dB at 1.55 μm wavelength for the quasi-TE and quasi-TM modes, respectively. The 1 dB bandwidth is 100 nm for both the polarizations. The fabrication tolerances are also thoroughly calculated for the proposed PBS.

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Design and Performance Study of a Compact SOI Polarization Rotator at 1.55 μm

Abstract: This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent

Cited by 42 publications

References 20 publications

Multi-Poly-Silicon-Layer-Based Spot-Size Converter for Efficient Coupling Between Silicon Waveguide and Standard Single-Mode Fiber

Multi-Poly-Silicon-Layer-Based Spot-Size Converter for Efficient Coupling Between Silicon Waveguide and Standard Single-Mode Fiber

Design of compact polarization rotator using simple silicon nanowires

Compact and fabrication-tolerant polarization splitter based on horizontal triple-slot waveguide

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