Multimode Interference Power-Splitter Using InP-Based Deeply Etched Hybrid Plasmonic Waveguide

Nikoufard, Mahmoud; Alamouti, Masoud Kazemi; Pourgholi, Soheil

doi:10.1109/tnano.2017.2688397

Cited by 47 publications

(25 citation statements)

References 26 publications

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“…This kind of optical characterization of the mode may be beneficial for nonlinear optical technology applications. From the overall analysis of optical performance of the HMIMPW, at w = 200 nm, s = 25 nm, and h = 200 nm, the propagation length is obtained as 40 μm, which is better than that of the reported work in References with the confinement of light in the spacer region of around 37%. Moreover, the mode area and power density of HMIMPW have been achieved, respectively as, 0.027 and 74 μm −2 , that are quite decent values than that reported in References 5, 13, 14, 24, 25, and correspondingly.…”

Section: Investigations On Mode Characteristics Of the Hmimpwmentioning

confidence: 53%

“…This kind of optical characterization of the mode may be beneficial for nonlinear optical technology applications. From the overall analysis of optical performance of the HMIMPW, at w = 200 nm, s = 25 nm, and h = 200 nm, the propagation length is obtained as 40 μm, which is better than that of the reported work inReferences 5,7,18,[20][21][22] with the confinement of light in the spacer region of around 37%. Moreover, the mode area and power density of HMIMPW have been achieved, respectively as, 0.027 and 74 μm −2 , that are quiteF I G U R E 7 Power density vs thickness of high-index region (h) for different thicknesses of spacer region (s) [Color figure can be viewed at wileyonlinelibrary.com] F I G U R E 8 Mode area vs thickness of high-index region (h) for different thicknesses of spacer region (s) [Color figure can be viewed at wileyonlinelibrary.com]…”

mentioning

confidence: 60%

“…However, the fabrication of cylindrical waveguide is quite complicated. Various types of applications based on the hybrid plasmonic waveguides, such as power splitter, all‐optical logic gates, directional coupler, have been reported in the literature. The hybrid metal–insulator–metal plasmonic waveguide (HMIMPW) structures have advantages of high light confinement in relatively smaller low‐index dielectric region with low mode effective area and moderately large propagation length.…”

Section: Introductionmentioning

confidence: 99%

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Optical performance of hybrid metal‐insulator‐metal plasmonic waveguide for low‐loss and efficient photonic integration

Kumar

Singh

Ranjan

2020

Micro & Optical Tech Letters

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The fundamental mode characteristics of hybrid metal‐insulator‐metal plasmonic waveguide (HMIMPW), consists of a high‐index layer sandwiched between two spacer/low‐index and metal layers, has been explored to achieve relatively high power density with smaller effective mode area in low‐index waveguide region at the wavelength of 1550 nm. The HMIMPW has the advantage of low power loss with relatively large propagation distance, of order of several tens of λ. The simulation results have demonstrated that with spacer thickness of 10 nm, significantly higher confinement of optical mode power (> 65%) can be realized in the spacer region of HMIMPW with relatively smaller effective area of 0.0060 μm2 together with the power density > 200 μm−2. This type of analysis and results are very desirable for several specific applications, like optical sensing, nonlinear optics, optical manipulations. Further, the investigations on crosstalk performance between two parallel HMIMPWs have been addressed in order to realize the high integration density over the photonic chip. The decoupling separation of nearly 560 nm has been accomplished with the thicknesses of low‐ and high‐index regions, respectively, of 10 and 50 nm.

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Section: Investigations On Mode Characteristics Of the Hmimpwmentioning

confidence: 53%

“…This kind of optical characterization of the mode may be beneficial for nonlinear optical technology applications. From the overall analysis of optical performance of the HMIMPW, at w = 200 nm, s = 25 nm, and h = 200 nm, the propagation length is obtained as 40 μm, which is better than that of the reported work inReferences 5,7,18,[20][21][22] with the confinement of light in the spacer region of around 37%. Moreover, the mode area and power density of HMIMPW have been achieved, respectively as, 0.027 and 74 μm −2 , that are quiteF I G U R E 7 Power density vs thickness of high-index region (h) for different thicknesses of spacer region (s) [Color figure can be viewed at wileyonlinelibrary.com] F I G U R E 8 Mode area vs thickness of high-index region (h) for different thicknesses of spacer region (s) [Color figure can be viewed at wileyonlinelibrary.com]…”

mentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optical performance of hybrid metal‐insulator‐metal plasmonic waveguide for low‐loss and efficient photonic integration

Kumar

Singh

Ranjan

2020

Micro & Optical Tech Letters

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“…Multimode interference (MMI) couplers are waveguide structures widely used in various optical devices, including power, wavelength, and polarization splitters, switchers, and add-drop multiplexers 21–26 . The principle of MMI coupling is based on self-imaging theory 27 , in which a property of an input field can be reproduced, according to the intermodal interference, in single or multiple images at periodic intervals along a multimode waveguide.…”

Section: Introductionmentioning

confidence: 99%

“…The principle of MMI coupling is based on self-imaging theory 27 , in which a property of an input field can be reproduced, according to the intermodal interference, in single or multiple images at periodic intervals along a multimode waveguide. Conventional MMI-based devices work well only at a designed central wavelength or within a narrow bandwidth 21–26 . For different wavelengths and also to control the bar-, cross-, or 3-dB image, one needs to modify the dimensions of the MMI-based devices.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of tunable ultrashort power splitters based on slotted multimode interference couplers

Huang

Sun

2019

Sci Rep

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This paper presents an ultracompact tunable device for power splitting and switching by tuning the Fermi energy level of monolayer patternless graphene underneath a slotted multimode interference (MMI) coupler operating in the mid-infrared, λ = 9–11 μm. By introducing a high-index silicon slot in the central region of the MMI structure, which can significantly shorten the beat length, the proposed device has an approximately 4.5-fold reduction in device length and a two-fold improvement in power transmission compared with conventional MMI couplers without slotting. The device has a footprint of only 0.30 × 0.65 μm 2 (<λ/10), making it the smallest power splitter and switcher. Over the bandwidth of 2 μm, the power transmission of the proposed device is nearly uniform. Extending the operating bandwidth is limited only by the practically achievable Fermi energy of graphene. For the fabrication tolerance, the numerical results show that the relative power variations are lower than 5%, even though the dimension variations are greater than 15%. With its advantages of tunability, compact footprint, and broadband operation, the proposed device is suitable for highly dense photonic integrated circuits.

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Low‐loss indium phosphide‐based hybrid plasmonic waveguide

Soleimannezhad

Nikoufard

Mahdian

2020

Micro & Optical Tech Letters

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In this article, a new structure of InP‐based hybrid plasmonic waveguide (HPWG) has been proposed. The proposed HPWG shows a propagation length of at least 100 μm for 100 nm waveguide ridge width, twice the propagation length of the comparable silicon‐on‐insulator (SOI) based HPWG. This structure is compatible to the generic InP‐based layer stack and suitable for monolithic integration with active devices such as laser and photodetector at 1.55 μm wavelength. This layer structure can be potentially utilized in future ultra‐dense nanoscale photonic integrated circuits instead of SOI‐based HPWG. A directional coupler power splitter is also investigated with the proposed HPWG structure showing a coupling length of less than 2 μm with a transmission of 98.7% and insertion loss of about 0.02 dB for a waveguide width and gap width of 200 and 50 nm, respectively.

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Multimode Interference Power-Splitter Using InP-Based Deeply Etched Hybrid Plasmonic Waveguide

Cited by 47 publications

References 26 publications

Optical performance of hybrid metal‐insulator‐metal plasmonic waveguide for low‐loss and efficient photonic integration

Optical performance of hybrid metal‐insulator‐metal plasmonic waveguide for low‐loss and efficient photonic integration

Numerical simulations of tunable ultrashort power splitters based on slotted multimode interference couplers

Low‐loss indium phosphide‐based hybrid plasmonic waveguide

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