Coupling modulation of microrings at rates beyond the linewidth limit

Sacher, Wesley D.; Green, W. M. J.; Assefa, Solomon; Barwicz, Tymon; Pan, Huapu; Shank, Steven M.; Vlasov, Yurii A.; Poon, Joyce K. S.

doi:10.1364/oe.21.009722

Cited by 80 publications

(46 citation statements)

References 23 publications

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“…(14). The derivation above can be generalized for an arbitrary time-periodic modulation of the cavity frequency.…”

Section: Theorymentioning

confidence: 99%

“…In panel (c), we plot the 0-th Fourier component T 0 of the transmission of the modulated cavity [see Eq. (14)]. This is simply the normalized transmission integrated over a modulation cycle and is also equal to |s n | 2 .…”

Section: A Adiabatic Limitmentioning

confidence: 99%

“…We defineT t,n as the normalized Fourier components of the target transmission andT n as the normalized components computed through Eq. (14). Furthermore, we allow for an arbitrary phase detuning φ t , such that the objective function reads…”

Section: Signal Optimizationmentioning

confidence: 99%

“…2 The electro-optic modulator 3,4 is one of the most important components in silicon photonics, and CMOS-compatible, micrometer-scale devices based on a modulated cavity resonance have been a central focus of research. [5][6][7][8][9][10][11][12][13][14][15][16][17][18] Typically in these systems, a local refractive index change of the silicon results in a change of the transmission through the cavity. This is intuitively understood in the adiabatic limit, in which the modulation happens on a time scale that is much slower than the one given by the photon lifetime, but the phenomenology is in general much richer.…”

Section: Introductionmentioning

confidence: 99%

“…This is intuitively understood in the adiabatic limit, in which the modulation happens on a time scale that is much slower than the one given by the photon lifetime, but the phenomenology is in general much richer. [11][12][13][14] Here, we solve exactly the steady-state dynamics of a cavity with a periodically modulated resonance frequency. We provide a quantitative definition of the adiabatic regime and find highly non-intuitive effects outside of it.…”

Section: Introductionmentioning

confidence: 99%

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Exact solution to the steady-state dynamics of a periodically modulated resonator

2017

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We provide an analytic solution to the coupled-mode equations describing the steady-state of a single periodically-modulated optical resonator driven by a monochromatic input. The phenomenology of this system was qualitatively understood only in the adiabatic limit, i.e. for low modulation speed. However, both in and out of this regime, we find highly non-trivial effects for specific parameters of the modulation. For example, we show complete suppression of the transmission even with zero detuning between the input and the static resonator frequency. We also demonstrate the possibility for complete, lossless frequency conversion of the input into the side-band frequencies, as well as for optimizing the transmitted signal towards a given target temporal waveform. The analytic results are validated by first-principle simulations.

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“…(14). The derivation above can be generalized for an arbitrary time-periodic modulation of the cavity frequency.…”

Section: Theorymentioning

confidence: 99%

Section: A Adiabatic Limitmentioning

confidence: 99%

Section: Signal Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exact solution to the steady-state dynamics of a periodically modulated resonator

2017

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Compact and Efficient Thin‐Film Lithium Niobate Modulators

Chen,

Gao,

Lin

et al. 2023

Advanced Photonics Research

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Thin‐film lithium niobate (TFLN) modulators have garnered significant attention in the field of integrated photonics due to their ability to manipulate light. Numerous TFLN modulators have been demonstrated over the past few years, with speed records consistently being broken. However, due to the low refractive index contrast and anisotropic properties of TFLN, modulators based on this material feature larger device sizes and lower efficiency. A more compact and efficient modulator is important, as it is required for future dense integration and low power consumption applications. There have been some reports on how to reduce device size, and research is ongoing. A comprehensive summary can help individuals understand the current state of research and existing problems. In this review, we provide an overview of recent advancements in TFLN modulator technology, focusing on compactness and efficiency. Herein, various types of modulators, such as the Mach–Zehnder interferometer, Michelson interferometer, resonator cavity, and Z‐cut type modulators, are discussed. Moreover, potential improvement strategies and applications for compact and efficient TFLN modulators in advanced photonic systems are explored. In conclusion, in this review, the recent achievements in compact and efficient TFLN modulators are summarized and their significance in various optoelectronic applications is emphasized.

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An ultralow power athermal silicon modulator

et al. 2014

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Silicon photonics has emerged as the leading candidate for implementing ultralow power wavelength–division–multiplexed communication networks in high-performance computers, yet current components (lasers, modulators, filters and detectors) consume too much power for the high-speed femtojoule-class links that ultimately will be required. Here we demonstrate and characterize the first modulator to achieve simultaneous high-speed (25 Gb s−1), low-voltage (0.5 VPP) and efficient 0.9 fJ per bit error-free operation. This low-energy high-speed operation is enabled by a record electro-optic response, obtained in a vertical p–n junction device that at 250 pm V−1 (30 GHz V−1) is up to 10 times larger than prior demonstrations. In addition, this record electro-optic response is used to compensate for thermal drift over a 7.5 °C temperature range with little additional energy consumption (0.24 fJ per bit for a total energy consumption below 1.03 J per bit). The combined results of highly efficient modulation and electro-optic thermal compensation represent a new paradigm in modulator development and a major step towards single-digit femtojoule-class communications.

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Coupling modulation of microrings at rates beyond the linewidth limit

Cited by 80 publications

References 23 publications

Exact solution to the steady-state dynamics of a periodically modulated resonator

Exact solution to the steady-state dynamics of a periodically modulated resonator

Compact and Efficient Thin‐Film Lithium Niobate Modulators

An ultralow power athermal silicon modulator

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