Ultra-flat and broad optical frequency combs generation based on novel dispersion-flattened double-slot microring resonator

Wang, Yuanwu; Zhang, Minming; Lu, Luluzi; Li, Meifeng; Wang, Jinghao; Zhou, Fei; Dai, Jing; Deng, Lei; Liu, Deming

doi:10.1007/s00340-015-6295-6

Cited by 6 publications

(4 citation statements)

References 31 publications

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“…However, it has a wider wavelength range with a relatively low dispersion. Compared with Reference [ 6 ], a much lower dispersion in a slightly narrower bandwidth was obtained by the proposed network.…”

Section: Results and Analysismentioning

confidence: 52%

“…For the essential data set, we use the six structural parameters [H1, H2, H3, Hs1, Hs2, W] and materials in simulation to obtain the dispersion values through indirect calculation from

. Notably, we let H1 equal to H3, in order to reduce the computation in the research, as the change of H1 and H3 has a similar influence on waveguide’s dispersion [ 6 ]. Therefore, the data contained dispersion values varying with wavelength,

, which represent the dispersion profile mentioned above, as well as the corresponding set of structural parameters.…”

Section: Principle Of Dispersion Inverse Designmentioning

confidence: 99%

“…The targets of dispersion engineering may include fiber-induced dispersion compensation, tunable dispersion for mode locking of lasers, as well as many other relevant devices [ 2 , 3 , 4 , 5 ]. For instance, the generation of a light soliton comb requires a flat and low anomalous dispersion [ 6 , 7 , 8 , 9 ], while with normal dispersion, dark soliton, can be generated for obtaining improved optical combs [ 10 , 11 , 12 , 13 ]. Meanwhile, constant or extremely large dispersion may also be useful in applications of optical phase array, on-chip FWM/OPA process, and optical delay line [ 14 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

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Efficient Design for Integrated Photonic Waveguides with Agile Dispersion

Wang

Shen

et al. 2021

Sensors

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Chromatic dispersion engineering of photonic waveguide is of great importance for Photonic Integrated Circuit in broad applications, including on-chip CD compensation, supercontinuum generation, Kerr-comb generation, micro resonator and mode-locked laser. Linear propagation behavior and nonlinear effects of the light wave can be manipulated by engineering CD, in order to manipulate the temporal shape and frequency spectrum. Therefore, agile shapes of dispersion profiles, including typically wideband flat dispersion, are highly desired among various applications. In this study, we demonstrate a novel method for agile dispersion engineering of integrated photonic waveguide. Based on a horizontal double-slot structure, we obtained agile dispersion shapes, including broadband low dispersion, constant dispersion and slope-maintained linear dispersion. The proposed inverse design method is objectively-motivated and automation-supported. Dispersion in the range of 0–1.5 ps/(nm·km) for 861-nm bandwidth has been achieved, which shows superior performance for broadband low dispersion. Numerical simulation of the Kerr frequency comb was carried out utilizing the obtained dispersion shapes and a comb spectrum for 1068-nm bandwidth with a 20-dB power variation was generated. Significant potential for integrated photonic design automation can be expected.

show abstract

Section: Results and Analysismentioning

confidence: 52%

“…For the essential data set, we use the six structural parameters [H1, H2, H3, Hs1, Hs2, W] and materials in simulation to obtain the dispersion values through indirect calculation from

, which represent the dispersion profile mentioned above, as well as the corresponding set of structural parameters.…”

Section: Principle Of Dispersion Inverse Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient Design for Integrated Photonic Waveguides with Agile Dispersion

Wang

Shen

et al. 2021

Sensors

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show abstract

“…However, the large dispersion barrier between the pump and the locations of DWs inevitably results in a decrease in the spectral flatness of the soliton microcombs. Many attempts at advanced dispersion engineering have been proposed, including slot waveguides (Zheng et al, 2008;De Leonardis and Passaro, 2011;Zhang et al, 2013;Wang et al, 2016), bilayer structures (Guo et al, 2016), and multi-cladding schemes (Jafari and Zarifkar, 2016;Liang et al, 2016;Wang et al, 2021). Recently, multiple zero group velocity wavelengths have been proven to facilitate flat and broadband microcomb generation, which are theoretically achieved in integrated microresonators with the above-mentioned methods.…”

Section: Introductionmentioning

confidence: 99%

Engineered octave frequency comb in integrated chalcogenide dual-ring microresonators

et al. 2023

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Octave-spanning Kerr combs bridging the spectral windows of the near-infrared region (NIR) and the mid-infrared (MIR) region are expected in a number of applications, including high-capacity coherent optical communications, and gas molecular absorption footprints. Here, we propose novel concentric dual-ring microresonators (DRMs) for advanced dispersion engineering to tailor the comb spectral profile. The dispersion can be flexibly engineered not only by the cross-section of the DRMs, but also by the gap between concentric dual-ring microresonators, which provides a new path to geometrically control the spectral profile of the soliton Kerr combs. An octave-spanning Kerr soliton microcomb with multi-dispersive waves has been achieved numerically covering from the telecommunication band (1224 nm) to the mid-infrared band region (2913 nm) with a −40 dB bandwidth of 1265 nm. Our results are promising to fully understand the nonlinear dynamics in hybrid modes in DRMs, which helps control broadband comb formation.

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Improved broadband dispersion engineering in coupled silicon nitride waveguides with a partially etched gap

Yao

Wan

et al. 2019

Appl. Opt.

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Ultra-flat and broad optical frequency combs generation based on novel dispersion-flattened double-slot microring resonator

Cited by 6 publications

References 31 publications

Efficient Design for Integrated Photonic Waveguides with Agile Dispersion

Efficient Design for Integrated Photonic Waveguides with Agile Dispersion

Engineered octave frequency comb in integrated chalcogenide dual-ring microresonators

Improved broadband dispersion engineering in coupled silicon nitride waveguides with a partially etched gap

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