A compact plasmonic MOS-based 2×2 electro-optic switch

Ye, Chenran; Liu, Ke; Soref, Richard A.; Sorger, Volker J.

doi:10.1515/nanoph-2015-0010

Cited by 73 publications

(52 citation statements)

References 33 publications

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“…The best plasmonic 2 × 2 to date is the 3-waveguide directional-coupler device in which the MOS channel is an "island" side-coupled between two blank silicon waveguides. 40 This system has three supermodes: TM1, TM2, and TM3. The coupling length L c is chosen for phase matching at zero bias: n(TM1) + n(TM2) = 2n(TM3)-where n is the mode's effective index-so that light crosses over from the first to the third waveguide.…”

Section: Plasmonic-photonic Switchesmentioning

confidence: 99%

“…The plasmonic-photonic advantages are broad bandwidth, ultrafast fJ/bit switching, and a small interaction length ∼15 µm. Simulations of 2 × 2 and 5 × 5 routers 40,41 are reviewed in Sec. XVIII.…”

Section: Plasmonic-photonic Switchesmentioning

confidence: 99%

“…Such ribs would supply low-IL operation of 3 W, and the ribs would merge into strips at inputs and outputs. For the case of the MOS plasmonic-photonic central waveguide "island" in 3 W, excellent performance has been projected for 1550-nm conventional-mode 2 × 2 and 5 × 5 routers, 40,41 except that the IL in the bar state of 2 × 2 is about 1.8 dB. This problem can, in principle, be solved by transforming the 3 W (both the MOS and PIN versions) into a dark-mode device where adiabatic elimination among the three waveguides provides for the ∼0.5 IL dB bar state that is desired.…”

Section: -10mentioning

confidence: 99%

See 2 more Smart Citations

Tutorial: Integrated-photonic switching structures

Soref

2018

APL Photonics

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Recent developments in waveguided 2 × 2 and N × M photonic switches are reviewed, including both broadband and narrowband resonant devices for the Si, InP, and AlN platforms. Practical actuation of switches by electro-optical and thermo-optical techniques is discussed. Present datacom-and-computing applications are reviewed, and potential applications are proposed for chip-scale photonic and optoelectronic integrated switching networks. Potential is found in the reconfigurable, programmable “mesh” switches that enable a promising group of applications in new areas beyond those in data centers and cloud servers. Many important matrix switches use gated semiconductor optical amplifiers. The family of broadband, directional-coupler 2 × 2 switches featuring two or three side-coupled waveguides deserves future experimentation, including devices that employ phase-change materials. The newer 2 × 2 resonant switches include standing-wave resonators, different from the micro-ring traveling-wave resonators. The resonant devices comprise nanobeam interferometers, complex-Bragg interferometers, and asymmetric contra-directional couplers. Although the fast, resonant devices offer ultralow switching energy, ∼1 fJ/bit, they have limitations. They require several trade-offs when deployed, but they do have practical application.

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Section: Plasmonic-photonic Switchesmentioning

confidence: 99%

Section: Plasmonic-photonic Switchesmentioning

confidence: 99%

Section: -10mentioning

confidence: 99%

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Tutorial: Integrated-photonic switching structures

Soref

2018

APL Photonics

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“…SPPs, which are surface waves propagating along the interface between a metal and a dielectric [49], can concentrate electromagnetic energy at volumes of subwavelength scale and enable the manipulation of light beyond the diffraction limit [50][51][52][53][54][55][56][57][58][59]. Yang and Mei introduced a periodic PT-symmetric modulation on the effective refractive index of a metal-dielectric waveguide in the cylindrical coordinate system.…”

Section: Unidirectional Reflectionless Propagation In Pt-symmetric Symentioning

confidence: 99%

Unidirectional reflectionless light propagation at exceptional points

et al. 2017

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Abstract:In this paper, we provide a comprehensive review of unidirectional reflectionless light propagation in photonic devices at exceptional points (EPs). EPs, which are branch point singularities of the spectrum, associated with the coalescence of both eigenvalues and corresponding eigenstates, lead to interesting phenomena, such as level repulsion and crossing, bifurcation, chaos, and phase transitions in open quantum systems described by non-Hermitian Hamiltonians. Recently, it was shown that judiciously designed photonic synthetic matters could mimic the complex non-Hermitian Hamiltonians in quantum mechanics and realize unidirectional reflection at optical EPs. Unidirectional reflectionlessness is of great interest for optical invisibility. Achieving unidirectional reflectionless light propagation could also be potentially important for developing optical devices, such as optical network analyzers. Here, we discuss unidirectional reflectionlessness at EPs in both parity-time (PT)-symmetric and non-PT-symmetric optical systems. We also provide an outlook on possible future directions in this field.

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“…The silicon HPWG, which usually has a metal strip, a silicon core, and an silicon oxide (SiO 2 ) insulator layer between them, was proposed as a novel waveguide with nanoscale light confinement as well as relatively long propagation distance [46] and has become very popular for integrated nanophotonics in the past years [60][61][62][63][64][65]. Meanwhile, plasmonic structures and waveguides are also promising candidates for the application at mid-IR wavelength [66,67].…”

Section: Introductionmentioning

confidence: 99%

Ultracompact on-chip photothermal power monitor based on silicon hybrid plasmonic waveguides

Shi

et al. 2017

Nanophotonics

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Abstract:We propose and demonstrate an ultracompact on-chip photothermal power monitor based on a silicon hybrid plasmonic waveguide (HPWG), which consists of a metal strip, a silicon core, and a silicon oxide (SiO 2 ) insulator layer between them. When light injected to an HPWG is absorbed by the metal strip, the temperature increases and the resistance of the metal strip changes accordingly due to the photothermal and thermal resistance effects of the metal. Therefore, the optical power variation can be monitored by measuring the resistance of the metal strip on the HPWG. To obtain the electrical signal for the resistance measurement conveniently, a Wheatstone bridge circuit is monolithically integrated with the HPWG on the same chip. As the HPWG has nanoscale light confinement, the present power monitor is as short as ~ 3 μm, which is the smallest photothermal power monitor reported until now. The compactness helps to improve the thermal efficiency and the response speed. For the present power monitor fabricated with simple fabrication processes, the measured responsivity is as high as about 17.7 mV/mW at a bias voltage of 2 V and the power dynamic range is as large as 35 dB.

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A compact plasmonic MOS-based 2×2 electro-optic switch

Cited by 73 publications

References 33 publications

Tutorial: Integrated-photonic switching structures

Tutorial: Integrated-photonic switching structures

Unidirectional reflectionless light propagation at exceptional points

Ultracompact on-chip photothermal power monitor based on silicon hybrid plasmonic waveguides

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