Silicon photonics phase and intensity modulators for flat frequency comb generation

Deniel, Lucas; Weckenmann, Erwan; Pérez‐Galacho, Diego; Lafforgue, Christine; Monfray, S.; Alonso‐Ramos, Carlos; Bramerie, Laurent; Bœuf, F.; Viven, Laurent; Marris‐Morini, Delphine

doi:10.1364/prj.431282

Cited by 7 publications

(3 citation statements)

References 50 publications

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“…In 2021, Deniel et al focused on two schemes (DDMZM, cascaded MZM, and PMs) to study strategies for flat-topped EOFCs generation. [95] They used a numerical model to optimize the performance of two schemes that considered both static and dynamic effects. Nine lines were obtained within a 2 dB flatness, with a repetition rate ranging from 0.1 to 7 GHz.…”

Section: Soi-based Eofc Generationmentioning

confidence: 99%

Integrated Electro‐Optic Frequency Combs: Theory and Current Progress

Zhang,

Yin,

Zhang

et al. 2024

Laser & Photonics Reviews

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Optical frequency combs (OFCs) have evolved into one of the most active areas of photonics, underpinning advancements in both fundamental science and commercial contexts. Electro‐optic modulation for OFC generation offers excellent versatility, stability, and phase coherence. With the rapid progress in micro‐nano fabrication techniques, electro‐optic frequency combs (EOFCs) have been realized on many integrated platforms, including silicon on insulator (SOI), indium phosphide (InP), and lithium niobate on insulator (LNOI). These compact, low‐cost, and energy‐efficient EOFCs support a wide range of applications. In this study, we review the theory for the generation of integrated EOFCs, summarize the demonstrations on the main integrated platforms, present applications, and envision the development directions of integrated EOFCs in view of materials, devices, and applications.

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Section: Soi-based Eofc Generationmentioning

confidence: 99%

Integrated Electro‐Optic Frequency Combs: Theory and Current Progress

Zhang,

Yin,

Zhang

et al. 2024

Laser & Photonics Reviews

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“…Moreover, the physical dimensions of lightwave such as frequency [24], time [25] and angular momentum [26] can be introduced to realize flexible light control. There have been lots of approaches such as ring resonator-based configurations with phase modulators (PM) [10,[27][28][29], intensity modulators (IQ) [30,31] and acoustic-optical modulators (AOM) [32,33]. These systems are commonly referred to as dynamical modulated ring resonators [10,[27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

“…There have been lots of approaches such as ring resonator-based configurations with phase modulators (PM) [10,[27][28][29], intensity modulators (IQ) [30,31] and acoustic-optical modulators (AOM) [32,33]. These systems are commonly referred to as dynamical modulated ring resonators [10,[27][28][29][30][31][32][33]. By taking advantage of the prolong interaction between light and modulators, multiple dynamic modulation enables a high-efficiency light manipulation, leading to a range of applications in quantum and classical optics including, for example, active mode locking of ultrashort pulses [34], multi-wavelength light sources generation [35], as well as nonreciprocal light propagation [36].…”

Section: Introductionmentioning

confidence: 99%

Anomalous spectral holes in a fiber-loop circuit undergoing dynamic modulation

Ding

et al. 2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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We investigate theoretically and experimentally anomalous spectral holes, i.e. the cancellations of certain frequency modes inside a wide frequency comb, in a fiber-loop circuit with an incorporated phase modulator (PM). During the process of phase modulation, the frequency modes couple between each other accompanying with a nonreciprocal phase, which mimics an artificial gauge potential for photons. As the light circulates in the fiber loop, coherent interference effects occur between frequency modes in distinct circulations, which are highly influenced by the artificial gauge potential. By carefully choosing the gauge potential via adjusting the modulation phase, we can coherently suppress a series of frequency components within a broad spectrum and flexibly manipulate the positions, widths and depths of these drops. In the experiment, we achieved a hole position shift with ~50 GHz and a hole width with ~30 GHz while the extinction ratio reaches ~15 dB. For even higher modulation depth beyond the experiment range, the simulation shows that the width of main spectral hole will grow linearly with the increase of modulation depth while the position and depth tend to be stable.The study reveals the anomalous cancellation of frequency modes in a fiber loop, which holds great promises for potential applications in optical communications and signal processing.

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Tunable On‐Chip Electro‐Optic Frequency‐Comb Generation at 8 μm$\umu {\rm m}$ wavelength

Turpaud,

Nguyen,

Koompai

et al. 2024

Laser & Photonics Reviews

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The development of compact systems operating in the long‐wave infrared wavelength range is of high interest for spectroscopic and sensing applications. There is currently a wide interest toward the development of optical frequency‐combs to enhance the performances of these systems. Amongst the different techniques to obtain optical frequency‐combs, electro‐optic frequency‐comb generation presents major advantages thanks to the tunable repetition rate only limited by the bandwidth of the used electro‐optical modulator. However, the development of integrated and efficient electro‐optical modulators operating in a wide long‐wave infrared spectral band is still at its infancy, and electro‐optical frequency‐comb has not been demonstrated so far beyond 3 wavelength. In this work, a Schottky‐based modulator embedded in a Ge‐rich graded SiGe waveguide is used for electro‐optic frequency‐comb generation. Considering the limited efficiency of the modulator, harmonically‐rich RF signals are used to enhance the generation of comb lines around the optical carrier. Interestingly, this allows us to demonstrate the generation of electro‐optical combs spanning over 2.4 GHz around 8 wavelength. This paves the way toward fully integrated and tunable mid‐infrared electro‐optic frequency‐comb generation systems.

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Silicon photonics phase and intensity modulators for flat frequency comb generation

Cited by 7 publications

References 50 publications

Integrated Electro‐Optic Frequency Combs: Theory and Current Progress

Integrated Electro‐Optic Frequency Combs: Theory and Current Progress

Anomalous spectral holes in a fiber-loop circuit undergoing dynamic modulation

Tunable On‐Chip Electro‐Optic Frequency‐Comb Generation at 8 μm$\umu {\rm m}$ wavelength

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