Optical mode conversion based on silicon-on-insulator material <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si65.svg"><mml:mrow><mml:mi mathvariant="normal">Ψ</mml:mi></mml:mrow></mml:math>-junction coupler and multimode interferometer

Tu, Dao Duy; Linh, Ho Duc Tam; Phuoc, Vuong Quang; Thang, Dao; Truong, Cao Dung; Hùng, Nguyễn Tấn

doi:10.1016/j.optlastec.2021.107177

Cited by 3 publications

(2 citation statements)

References 35 publications

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“…Different from WDM that groups several optical carrier signals onto a single waveguide, [14][15][16] MDM integrates many orthogonal modes in the same wavelength with no interchannel crosstalk. [17][18][19][20][21][22][23][24][25] By exploiting the hybrid system of WDM and MDM, the optical capacity could be increased multiple times for advanced applications in optical telecommunications, photonic on-chip interconnections and computing. In such hybrid networks, mode-and-wavelength multiplexers and demultiplexers based on PIC are certainly inevitable.…”

Section: Introductionmentioning

confidence: 99%

“…MDM, which deploys a new domain, the mode, becomes a great solution. Different from WDM that groups several optical carrier signals onto a single waveguide, 14–16 MDM integrates many orthogonal modes in the same wavelength with no interchannel crosstalk 17–25 . By exploiting the hybrid system of WDM and MDM, the optical capacity could be increased multiple times for advanced applications in optical telecommunications, photonic on‐chip interconnections and computing.…”

Section: Introductionmentioning

confidence: 99%

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Silicon‐photonic four‐mode triple‐band multiplexing device for hybrid wavelength/mode division multiplexing networks

Tam Linh,

Hong Yen,

Duy Phuc

et al. 2024

Int J Communication

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SummaryWhile wavelength division multiplexing (WDM) technology combines several wavelengths onto a single waveguide, the technology of mode division multiplexing (MDM) allows many orthogonal modes of the same wavelength to operate simultaneously without interchannel crosstalk. Thus, the hybrid WDM and MDM network in which the two above‐mentioned techniques cooperate could give a several‐fold increase in the overall network capacity. Constructing this network requires hybrid wavelength‐and‐mode multiplexers, especially ones with high integration and complementary metal‐oxide‐semiconductor (CMOS) compatibility. In this paper, we propose a design of a four‐mode triple‐band multiplexer that is capable of multiplexing up to 12 separate optical signal flows by utilizing four eigenmodes (TE0, TE1, TE2, and TE3) and three‐wavelength windows, which center at 1310, 1490, and 1550 nm. The device is on silicon‐on‐insulator (SOI) platform, consisting of four butterfly‐shaped multimode interference (MMI) couplers, four directional couplers, and a cascaded asymmetric Y‐junction coupler. Via numerical simulations, the proposed design is verified to be able to operate effectively on the three aforementioned bandwidth slots with an optical conversion efficiency of over 93% in all functions. Moreover, it exhibits insertion loss less than 1.5 dB and crosstalk smaller than −16 dB within 25 nm bandwidth at each wavelength window. These results can affirm the success of wavelength–mode combination, which leads to a massive improve in the channel capacity on the same optical multiplexing system for optical telecommunications and photonics on‐chip interconnections.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silicon‐photonic four‐mode triple‐band multiplexing device for hybrid wavelength/mode division multiplexing networks

Tam Linh,

Hong Yen,

Duy Phuc

et al. 2024

Int J Communication

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Flexible transmission control of mode conversion in a TiO2 cladding silicon subwavelength waveguide by engineering inter-waveguide mode coupling

Chen

Sun

Wang

et al. 2023

Optics & Laser Technology

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Beam recirculation and mode-order conversion via compact Mach–Zehnder–Fano interferometers

Giden¹

2022

Opt. Lett.

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In this Letter, photonic crystal (PC) waveguide-based interferometer design is studied; spectral as well as temporal analyses have been conducted. Intentional structural modifications inside the interferometer trigger Fano resonances, allowing for extraordinary optical effects, such as enhanced beam recirculation and mode-order conversion. The proposed Mach–Zehnder–Fano interferometer is compatible with conventional silicon-on-insulator (SOI) technology and consists of two arms: the lower arm, with no point defects, creates continuum states, whereas the upper arm, including a Fano defect, creates discrete states. The PC waveguide channel with intentional point defects, which possess effective discreteness, creates the required phase retardation of the propagating beam, enabling Fano resonance excitations. Such a type of PC waveguide-based interferometer allows for the realization of compact mode-order converters with a broad 3 dB-bandwidth of 65 nm (at the wavelength range of λ = 1517 − 1582 nm) and efficient optical switching as well as sensing capabilities, operating at optical telecommunication bands, favoring inherent beam recirculation characteristics.

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Optical mode conversion based on silicon-on-insulator material Ψ-junction coupler and multimode interferometer

Cited by 3 publications

References 35 publications

Silicon‐photonic four‐mode triple‐band multiplexing device for hybrid wavelength/mode division multiplexing networks

Silicon‐photonic four‐mode triple‐band multiplexing device for hybrid wavelength/mode division multiplexing networks

Flexible transmission control of mode conversion in a TiO2 cladding silicon subwavelength waveguide by engineering inter-waveguide mode coupling

Beam recirculation and mode-order conversion via compact Mach–Zehnder–Fano interferometers

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