Acousto-optical modulation of thin film lithium niobate waveguide devices

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

doi:10.1364/prj.7.001003

Cited by 96 publications

(57 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electro-optic modulation enables arbitrary modulation of cavity resonance within the bandwidth allowed by the driving circuit. This is in strong contrast to piezoelectric acoustic modulation which is confined to the vicinity of mechanical resonance frequency 45,49,50 . Such flexibility allows us to observe direct transition between the adiabatic driving regime and the non-adiabatic regime simply by continuously sweeping the modulation frequency to across the cavity linewidth.…”

Section: Resultsmentioning

confidence: 81%

Lithium niobate photonic-crystal electro-optic modulator

Li¹,

Ling²,

He³

et al. 2020

Nat Commun

280

160

View full text Add to dashboard Cite

Modern advanced photonic integrated circuits require dense integration of high-speed electro-optic functional elements on a compact chip that consumes only moderate power. Energy efficiency, operation speed, and device dimension are thus crucial metrics underlying almost all current developments of photonic signal processing units. Recently, thin-film lithium niobate (LN) emerges as a promising platform for photonic integrated circuits. Here, we make an important step towards miniaturizing functional components on this platform, reporting high-speed LN electro-optic modulators, based upon photonic crystal nanobeam resonators. The devices exhibit a significant tuning efficiency up to 1.98 GHz V −1 , a broad modulation bandwidth of 17.5 GHz, while with a tiny electro-optic modal volume of only 0.58 μm 3. The modulators enable efficient electro-optic driving of high-Q photonic cavity modes in both adiabatic and non-adiabatic regimes, and allow us to achieve electro-optic switching at 11 Gb s −1 with a bit-switching energy as low as 22 fJ. The demonstration of energy efficient and high-speed electro-optic modulation at the wavelength scale paves a crucial foundation for realizing large-scale LN photonic integrated circuits that are of immense importance for broad applications in data communication, microwave photonics, and quantum photonics.

show abstract

Section: Resultsmentioning

confidence: 81%

Lithium niobate photonic-crystal electro-optic modulator

Li¹,

Ling²,

He³

et al. 2020

Nat Commun

280

160

View full text Add to dashboard Cite

show abstract

“…Beyond this fabrication constraint, PZT is challenging to use because of significant hysteresis and an extremely large dielectric constant, which limits modulation speed. More exotic modulation platforms such as LiNbO3, polymer waveguides, and others have demonstrated impressive results [31][32][33][34][35], but, lacking CMOS compatibility, they do not have a clear path towards high-yield, very large-scale integration, which is critical for many applications.…”

Section: Introductionmentioning

confidence: 99%

CMOS-compatible, piezo-optomechanically tunable photonics for visible wavelengths and cryogenic temperatures

et al. 2019

View full text Add to dashboard Cite

We demonstrate a platform for phase and amplitude modulation in silicon nitride photonic integrated circuits via piezo-optomechanical coupling using tightly mechanically coupled aluminum nitride actuators. The platform, fabricated in a CMOS foundry, enables scalable active photonic integrated circuits for visible wavelengths, and the piezoelectric actuation functions without performance degradation down to cryogenic temperatures. As an example of the potential of the platform, we demonstrate a compact (~40 μm diameter) silicon nitride ring resonator modulator operating at 780 nm with intrinsic quality factors in excess of 1.5 million, >10 dB change in extinction ratio with 2 V applied, a switching time less than 4 ns, and a switching energy of 0.5 pJ/bit. We characterize the exemplary device at room temperature and 7 K. At 7 K, the device obtains a resistance of approximately 2x10 13 Ohms, allowing it to operate with sub-picowatt electrical power dissipation. We further demonstrate a Mach-Zehnder modulator constructed in the same platform with piezoelectrically tunable phase shifting arms, with 750 ns switching time constant and 20 nW steady-state power dissipation at room temperature.

show abstract

“…COMSOL commercial software is used to simulate the electric field distribution of the micro-ring resonator. Anisotropic medium tensor material model is used in the simulation of lithium niobate [22], [23].…”

Section: Simulation and Analysismentioning

confidence: 99%

Method for Receiving Weak Microwave Photonics Signals Based on Electro-Optical Up-Conversion

Zhang

Xie

et al. 2020

IEEE Photonics J.

View full text Add to dashboard Cite

A novel method for receiving weak microwave photonics signals based on a micro-ring resonator is proposed. This approach uses the nonlinear interaction of a microwave and an optical pump to generate an up-conversion signal to achieve the signal reception. The minimum detectable power of this method reaches −89.79 dBm, which is suitable for the detection of weak signals. The power conversion efficiency and bandwidth have a 10 times promotion compared to similar conversion methods at room temperature. The result also demonstrates that the detection sensitivity can be improved by five orders of magnitude compared to the traditional modulators, and the output signal-to-noise ratio can be improved by more than 17 dB using a micro-ring resonator.

show abstract

Acousto-optical modulation of thin film lithium niobate waveguide devices

Cited by 96 publications

References 30 publications

Lithium niobate photonic-crystal electro-optic modulator

Lithium niobate photonic-crystal electro-optic modulator

CMOS-compatible, piezo-optomechanically tunable photonics for visible wavelengths and cryogenic temperatures

Method for Receiving Weak Microwave Photonics Signals Based on Electro-Optical Up-Conversion

Contact Info

Product

Resources

About