Lithium Niobate Direction Coupler Modulator for Linearization of Analog Optical Signal Transmission

Petrov, Alexey; Лебедев, В. В.; Agruzov, P. M.; Il’ichev, I. V.; Shamrai, Aleksandr; Лиокумович, Л. Б.; Kudryashova, Tatyana; Sorotsky, Vladimir

doi:10.1109/eexpolytech50912.2020.9243972

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…In addition, it is very difficult to implement linearization in a wide frequency range and within a high dynamic range of a modulating signal. In our preliminary work described in a conference paper [1], we demonstrated the possibility of DCM linearization, the high influence of the operating point, and the dependence of the operating point on the modulation power. The goal of this extended work was to conduct a more detailed investigation of the factors influencing the suppression of third-order intermodulation distortion.…”

Section: Introductionmentioning

confidence: 92%

“…An experimental sample of the DCM (Figure 1c) was fabricated on the base of singlemode channel optical waveguides formed in a lithium niobate substrate using titanium thermal diffusion technology [1]. We chose the X-cut orientation of the crystal substrate (Figure 1a) due to lower DC drift [33].…”

Section: Experimental Sample Of the Electro-optical Directional Coupl...mentioning

confidence: 99%

“…This paper is an extended version of our conference paper published in the IEEE International Conference on Electrical Engineering and Photonics (EExPolytech), St. Petersburg, 2020 [1] on the development of the lithium niobate direction coupler modulator and its application in microwave photonics. The technology of integrated optical circuits on lithium niobate substrates [2,3] is one of the basic technologies for the development and production of modern optoelectronic components, primarily high-frequency integrated optical modulators [4,5], which are key components of fiber-optic telecommunication systems that implement the principles of microwave photonics.…”

Section: Introductionmentioning

confidence: 99%

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The Optimal Operating Point for Linearizing an Integrated Optical Lithium Niobate Directional Coupler Modulator

Agruzov,

Parfenov,

Ilichev

et al. 2024

Photonics

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The influence of an operating point on the linearity of an integrated optical lithium niobate directional coupler modulator was studied. It was found that the optimal setting for the position of an operating point for suppressing the third-order intermodulation distortion depended on the power of the high-frequency modulation signal. Thus, despite the simple design of the device, the directional coupler modulator requires a complex algorithm for setting an operating point to achieve a high linearity of operation. An active system for setting an operating point based on the low-frequency pilot signal and zeroing its third harmonic was used to demonstrate the possibility of linearization when the amplitude of the modulation signal changes. The use of an operating point control system became possible after limiting the drift of the operating point by etching the dielectric buffer layer in the interelectrode gap. The results obtained look promising for high-performance analog optical links.

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Section: Introductionmentioning

confidence: 92%

Section: Experimental Sample Of the Electro-optical Directional Coupl...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Optimal Operating Point for Linearizing an Integrated Optical Lithium Niobate Directional Coupler Modulator

Agruzov,

Parfenov,

Ilichev

et al. 2024

Photonics

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Efficient Thin-Film Lithium Niobate Integrated Optical Modulator with Wide Waveguides Fabricated by Contact Photolithography

Parfenov,

Tronev,

Agruzov

et al. 2023

2023 International Conference on Electrical Engineering and Photonics (EExPolytech)

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System for Stabilizing an Operating Point of a Remote Electro-Optical Modulator Powered by Optical Fiber

et al. 2020

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The system for stabilizing an operating point of remote integrated optical Mach–Zehnder modulators with a dual output has been developed. The designed electronic circuit for precise bias control had low power consumption (less than 5 mW) and could be powered through optical fiber by signal optical radiation at a wavelength of 1550 nm with a power of 15 mW. The experimental demonstration of common mode noise rejection proved a high accuracy of the quadrature operating point setting and stabilization, resistance to the light intensity noise, and low level noise and distortion added to the transmitted signals.

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Lithium Niobate Direction Coupler Modulator for Linearization of Analog Optical Signal Transmission

Cited by 3 publications

References 14 publications

The Optimal Operating Point for Linearizing an Integrated Optical Lithium Niobate Directional Coupler Modulator

The Optimal Operating Point for Linearizing an Integrated Optical Lithium Niobate Directional Coupler Modulator

Efficient Thin-Film Lithium Niobate Integrated Optical Modulator with Wide Waveguides Fabricated by Contact Photolithography

System for Stabilizing an Operating Point of a Remote Electro-Optical Modulator Powered by Optical Fiber

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