Extraction of Elastooptic Coefficient of Thin-Film Arsenic Trisulfide Using a Mach–Zehnder Acoustooptic Modulator on Lithium Niobate

Khan, Msi; Mahmoud, Amir; Cai, L. Z.; Mahmoud, Mohamed; Mukherjee, Tamal; Bain, James A.; Piazza, Gianluca

doi:10.1109/jlt.2019.2960396

Cited by 15 publications

(6 citation statements)

References 35 publications

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“…Heterostructures, which use one material for piezoelectric coupling and another material for optimized optomechanical coupling, have also been explored for piezo-optomechanics. Acoustic waves generated on LN have been used to measure the elasto-optic coefficients of the arsenic trisulfide thin film overlaying on the LN [389]. Piezo-optomechanical coupling between superconducting qubits and optical cavities using AlN on Si has been achieved [390], benefiting from the well-developed silicon optomechanics platform.…”

Section: Piezo-optomechanicsmentioning

confidence: 99%

“…This configuration provides an opportunity to achieve overall efficient piezo-optomechanical coupling by using materials with high photoelastic coefficients as top optical waveguides. Such structures have also been used to measure the photoelastic coefficients of the optical waveguide material [389]. However, it is challenging to form a high-Q acoustic resonators using this approach, since the top optical waveguide inevitably scatters the SAW into bulk acoustic waves, especially when the acoustic wavelengths are comparable to the size of optical waveguides.…”

Section: Surface Acoustic Wave On Bulk Lnmentioning

confidence: 99%

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Integrated photonics on thin-film lithium niobate

et al. 2021

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Lithium niobate (LN), an outstanding and versatile material, has influenced our daily life for decades: from enabling high-speed optical communications that form the backbone of the Internet to realizing radio-frequency filtering used in our cell phones. This half-century-old material is currently embracing a revolution in thin-film LN integrated photonics. The success of manufacturing wafer-scale, high-quality, thin films of LN on insulator (LNOI), accompanied with breakthroughs in nanofabrication techniques, have made high-performance integrated nanophotonic components possible. With rapid development in the past few years, some of these thin-film LN devices, such as optical modulators and nonlinear wavelength converters, have already outperformed their legacy counterparts realized in bulk LN crystals. Furthermore, the nanophotonic integration enabled ultra-low-loss resonators in LN, which unlocked many novel applications such as optical frequency combs and quantum transducers. In this Review, we cover-from basic principles to the state of the art-the diverse aspects of integrated thinfilm LN photonics, including the materials, basic passive components, and various active devices based on electro-optics, all-optical nonlinearities, and acousto-optics. We also identify challenges that this platform is currently facing and point out future opportunities. The field of integrated LNOI photonics is advancing rapidly and poised to make critical impacts on a broad range of applications in communication, signal processing, and quantum information.

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Section: Piezo-optomechanicsmentioning

confidence: 99%

Section: Surface Acoustic Wave On Bulk Lnmentioning

confidence: 99%

Integrated photonics on thin-film lithium niobate

et al. 2021

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“…The MZI modulator configurations in Refs. 23 , 33 are push-pull for Rayleigh SAWs, whereas for Refs. 22 , 24 , they are single arm modulations for Lamb waves.…”

Section: Resultsmentioning

confidence: 99%

“…Since the SAW excited by the IDT propagates in two opposite directions, only 50% of the effective energy within the total converted acoustic wave can ideally reach the waveguide and participate in the interaction with light waves under the single arm modulation mechanism, resulting in a quite low modulation efficiency. Although push-pull MZI modulation configurations (odd multiple of half the acoustic wavelength) have been proposed by carefully designing the distance between the two arms of the MZI and optimizing the structures of the metal grating reflectors, the diffraction effect of metal grating and the reconstructed acoustic mode introduced by the SAW reflection and the interference originating from waveguide sidewalls inevitably lead to much more SAW energy being wasted and cannot enable a modulation efficiency with a twofold enhancement, defeating the initial purpose of the double arm modulation 23 , 33 .…”

Section: Introductionmentioning

confidence: 99%

Highly efficient acousto-optic modulation using nonsuspended thin-film lithium niobate-chalcogenide hybrid waveguides

et al. 2022

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A highly efficient on-chip acousto-optic modulator is as a key component and occupies an exceptional position in microwave-to-optical conversion. Homogeneous thin-film lithium niobate is preferentially employed to build the suspended configuration for the acoustic resonant cavity, with the aim of improving the modulation efficiency of the device. However, the limited cavity length and complex fabrication recipe of the suspended prototype restrain further breakthroughs in modulation efficiency and impose challenges for waveguide fabrication. In this work, based on a nonsuspended thin-film lithium niobate-chalcogenide glass hybrid Mach–Zehnder interferometer waveguide platform, we propose and demonstrate a built-in push-pull acousto-optic modulator with a half-wave-voltage-length product VπL as low as 0.03 V cm that presents a modulation efficiency comparable to that of a state-of-the-art suspended counterpart. A microwave modulation link is demonstrated using our developed built-in push-pull acousto-optic modulator, which has the advantage of low power consumption. The nontrivial acousto-optic modulation performance benefits from the superior photoelastic property of the chalcogenide membrane and the completely bidirectional participation of the antisymmetric Rayleigh surface acoustic wave mode excited by the impedance-matched interdigital transducer, overcoming the issue of low modulation efficiency induced by the incoordinate energy attenuation of acoustic waves applied to the Mach–Zehnder interferometer with two arms in traditional push-pull acousto-optic modulators.

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“…In recent years, based on this rapidly-growing technology, a plethora of ultracompact integrated photonic devices and circuits, such as microdisk [59][60][61][62] and microring [46,[63][64][65][66] resonators, EO modulators, [67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85] acousto-optic modulators, [86][87][88][89] photodetector, [90] integrated single-photon detector, [91] grating couplers, [92][93][94][95][96] fiber-to-chip edge couplers, [97][98][99] wavelength Figure 2. Summary of the steps for fabrication of TFLN on Si wafers.…”

Section: Introductionmentioning

confidence: 99%

Rejuvenating a Versatile Photonic Material: Thin‐Film Lithium Niobate

Honardoost

Abdelsalam

Fathpour

2020

Laser & Photonics Reviews

120

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The excellent optical and unique material properties of lithium niobate have long established it as a prevailing photonic material, especially for the long‐haul telecom modulator and wavelength‐converter applications. However, conventional lithium niobate optical waveguides are bulky, hence large‐scale photonic circuit implementations are impeded and high power requirements are imposed. To address these shortcomings, thin‐film lithium niobate technology has been a topic of intense research in the last few years and a plethora of ultracompact devices with significantly superior performances than the conventional counterparts have been demonstrated. These efforts have rejuvenated lithium niobate for novel electro‐, nonlinear‐, and quantum‐optic applications. Herein, the most recent advancements of this booming field are summarized and a perspective for future directions is given.

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Extraction of Elastooptic Coefficient of Thin-Film Arsenic Trisulfide Using a Mach–Zehnder Acoustooptic Modulator on Lithium Niobate

Cited by 15 publications

References 35 publications

Integrated photonics on thin-film lithium niobate

Integrated photonics on thin-film lithium niobate

Highly efficient acousto-optic modulation using nonsuspended thin-film lithium niobate-chalcogenide hybrid waveguides

Rejuvenating a Versatile Photonic Material: Thin‐Film Lithium Niobate

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