Electro-optically tunable optical delay line with a continuous tuning range of ~220 fs in thin-film lithium niobate

Lvbin Song; Jinming Chen; Rongbo Wu; Yong Zheng; Zhaoxiang Liu; Guanhua Wang; Chao Sun; Min Wang; Ya Cheng

doi:10.1364/OL.486117

Electro-optically tunable optical delay line with a continuous tuning range of ~220 fs in thin-film lithium niobate

Lvbin Song, Jinming Chen, Rongbo Wu, Yong Zheng, Zhaoxiang Liu, Guanhua Wang, Chao Sun, Min Wang, Ya Cheng

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

We demonstrate fabrication of a 30-cm-long thin-film lithium niobate (TFLN) optical delay line (ODL) incorporated with segmented microelectrodes of 24-cm total length using the femtosecond laser lithography technique. The transmission spectra of the unbalanced Mach–Zehnder interferometers (MZIs) reveal an ultra-low propagation loss of 0.025 dB/cm. The device exhibits a low half-wave voltage of 0.45 V, corresponding to a voltage-length product of 10.8 V·cm, which is equivalent to 5.4 V·cm in the push-pull configuration. We also demonstrate a high electro-optic (EO) tuning efficiency of 3.146 fs/V and a continuous tuning range of 220 fs in the fabricated ODL.

Original language	English
Pages (from-to)	2261-2264
Number of pages	4
Journal	Optics Letters
Volume	48
Issue number	9
DOIs	https://doi.org/10.1364/OL.486117
State	Published - 1 May 2023

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title = "Electro-optically tunable optical delay line with a continuous tuning range of \textasciitilde{}220 fs in thin-film lithium niobate",

abstract = "We demonstrate fabrication of a 30-cm-long thin-film lithium niobate (TFLN) optical delay line (ODL) incorporated with segmented microelectrodes of 24-cm total length using the femtosecond laser lithography technique. The transmission spectra of the unbalanced Mach–Zehnder interferometers (MZIs) reveal an ultra-low propagation loss of 0.025 dB/cm. The device exhibits a low half-wave voltage of 0.45 V, corresponding to a voltage-length product of 10.8 V·cm, which is equivalent to 5.4 V·cm in the push-pull configuration. We also demonstrate a high electro-optic (EO) tuning efficiency of 3.146 fs/V and a continuous tuning range of 220 fs in the fabricated ODL.",

author = "Lvbin Song and Jinming Chen and Rongbo Wu and Yong Zheng and Zhaoxiang Liu and Guanhua Wang and Chao Sun and Min Wang and Ya Cheng",

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TY - JOUR

T1 - Electro-optically tunable optical delay line with a continuous tuning range of ~220 fs in thin-film lithium niobate

AU - Song, Lvbin

AU - Chen, Jinming

AU - Wu, Rongbo

AU - Zheng, Yong

AU - Liu, Zhaoxiang

AU - Wang, Guanhua

AU - Sun, Chao

AU - Wang, Min

AU - Cheng, Ya

PY - 2023/5/1

Y1 - 2023/5/1

N2 - We demonstrate fabrication of a 30-cm-long thin-film lithium niobate (TFLN) optical delay line (ODL) incorporated with segmented microelectrodes of 24-cm total length using the femtosecond laser lithography technique. The transmission spectra of the unbalanced Mach–Zehnder interferometers (MZIs) reveal an ultra-low propagation loss of 0.025 dB/cm. The device exhibits a low half-wave voltage of 0.45 V, corresponding to a voltage-length product of 10.8 V·cm, which is equivalent to 5.4 V·cm in the push-pull configuration. We also demonstrate a high electro-optic (EO) tuning efficiency of 3.146 fs/V and a continuous tuning range of 220 fs in the fabricated ODL.

AB - We demonstrate fabrication of a 30-cm-long thin-film lithium niobate (TFLN) optical delay line (ODL) incorporated with segmented microelectrodes of 24-cm total length using the femtosecond laser lithography technique. The transmission spectra of the unbalanced Mach–Zehnder interferometers (MZIs) reveal an ultra-low propagation loss of 0.025 dB/cm. The device exhibits a low half-wave voltage of 0.45 V, corresponding to a voltage-length product of 10.8 V·cm, which is equivalent to 5.4 V·cm in the push-pull configuration. We also demonstrate a high electro-optic (EO) tuning efficiency of 3.146 fs/V and a continuous tuning range of 220 fs in the fabricated ODL.

UR - https://www.scopus.com/pages/publications/85153732420

U2 - 10.1364/OL.486117

DO - 10.1364/OL.486117

M3 - 文章

C2 - 37126249

AN - SCOPUS:85153732420

SN - 0146-9592

VL - 48

SP - 2261

EP - 2264

JO - Optics Letters

JF - Optics Letters

IS - 9

ER -

Electro-optically tunable optical delay line with a continuous tuning range of ~220 fs in thin-film lithium niobate

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