High transmission through a 90° bend in a polarization-independent single-mode photonic crystal waveguide

Erol, Adem Enes; Sözüer, H. Sami

doi:10.1364/oe.23.032690

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…As a result, it is very desired to develop various high-performance multimode photonic devices on silicon for the manipulation of higher-order modes. Currently many multimode silicon photonic devices have been developed, e.g., on-chip mode (de) multiplexers [174][175][176][177][178][179][180][181][182][183][184][185][186][187][188][189][190][191][192][193], higher-order mode generator and exchanger , multimode splitter [215][216][217][218][219][220], MWBs [221][222][223][224][225][226][227][228][229][230][231][232][233][234][235][236], MWCs [237][238][239][240][241]…”

Section: Subwavelength Silicon Photonics For Higher-order-mode Manipulationmentioning

confidence: 99%

“…Subwavelength silicon photonics for higher-order mode propagation SWG-assisted multimode waveguide bends (MWBs) Waveguide bends are usually inevitable for building PICs and previously lots of works were focusing on sharp bends for singlemode waveguides [221][222][223][224][225]. For multimode photonics, sharp multimode waveguide bends (MWBs) are extremely important.…”

Section: Dual-mode 2×2 3db Power Splittersmentioning

confidence: 99%

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Subwavelength silicon photonics for on-chip mode-manipulation

Zhang

et al. 2021

PhotoniX

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On-chip mode-manipulation is one of the most important physical fundamentals for many photonic integrated devices and circuits. In the past years, great progresses have been achieved on subwavelength silicon photonics for on-chip mode-manipulation by introducing special subwavelength photonic waveguides. Among them, there are two popular waveguide structures available. One is silicon hybrid plasmonic waveguides (HPWGs) and the other one is silicon subwavelength-structured waveguides (SSWGs). In this paper, we focus on subwavelength silicon photonic devices and the applications with the manipulation of the effective indices, the modal field profiles, the mode dispersion, as well as the birefringence. First, a review is given about subwavelength silicon photonics for the fundamental-mode manipulation, including high-performance polarization-handling devices, efficient mode converters for chip-fiber edge-coupling, and ultra-broadband power splitters. Second, a review is given about subwavelength silicon photonics for the higher-order-mode manipulation, including multimode converters, multimode waveguide bends, and multimode waveguide crossing. Finally, some emerging applications of subwavelength silicon photonics for on-chip mode-manipulation are discussed.

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Section: Subwavelength Silicon Photonics For Higher-order-mode Manipulationmentioning

confidence: 99%

Section: Dual-mode 2×2 3db Power Splittersmentioning

confidence: 99%

Subwavelength silicon photonics for on-chip mode-manipulation

Zhang

et al. 2021

PhotoniX

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“…Through integrating waveguides [1,2], resonators [3,4], arrayed waveguide grating [5] and other optical processing components on the micro/nano-scale, the integrated photonic chip can realize low-power and small-size on-chip optical function integration. However, because of the small-size characteristics of the waveguide that connects with the optical components to achieve cooperative operation, the large dimensional difference between the fiber mode [6] and the waveguide mode [7,8] makes their coupling difficult, and the inefficient signal transmission between the fiber and the chip becomes a key problem which restricts the performance of the integrated photonic chip.…”

Section: Introductionmentioning

confidence: 99%

Simulating the effects of refractive index difference on the coupling efficiency of periodically segmented waveguide mode converter

Zheng¹,

He²,

Jiang³

et al. 2021

Optica Applicata

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Efficient coupling of micro/nano-optical waveguides with single-mode fibers is the premise for the efficient operation of the integrated photonic chip, which directly determines its optical performance. In this paper, the design principles of periodically segmented waveguide (PSW) structure used for high-efficiency fiber-chip coupling are proposed, and the effects of refractive index difference Δ on coupling efficiency and structural parameters are studied by simulation. It is found that as the Δ of the PSW increases, the period of the PSW tends to be smaller, and the coupling efficiency decreases continuously, reduced by around 0.673 dB in the range of Δ = 3% to Δ = 7%. Through the analysis of PSW optical mechanisms, it demonstrates that the main reason for the decrease of coupling efficiency is that the transmission loss of the tapered section increases sharply with the increase of Δ. High-Δ PSW is difficult to apply to highly integrated silica optical chips due to the unignorably insertion loss.

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“…Photonic Crystals (PCs) have attracted a great deal of attention during the last two decades [1][2][3] due to their potential applications in optoelectronic and optical communications [4][5][6][7][8][9][10][11][12][13][14][15][16]. They can be used in the fabrication of lasers [4,5], optical diodes [6,7], waveguides [8,9], filters [10], dielectric reflectors [11][12][13][14], sensors [15,16], etc. Research in PCs has known a tremendous expansion and covers a wide range of electromagnetic spectrum from microwaves to the visible.…”

Section: Introductionmentioning

confidence: 99%