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Hyperband electro-optic modulator based on a two-pulley coupled lithium niobate racetrack resonator

Hyeon Hwang, Mohamad Reza Nurrahman, Hyungjun Heo, Kiyoung Ko, Kiwon Moon, Jung Jin Ju, Sang-Wook Han, Hojoong Jung, Hansuek Lee, and Min-Kyo Seo

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Abstract

Integrated optical modulators (IOMs) are crucial components of on-chip photonic circuits. However, most conventional IOMs are restricted to specific spectral bands. Here, we leveraged the wide transparency window of lithium niobate in conjunction with the two-pulley coupled resonator method. This approach led to the development of a hyperband electro-optic (EO) modulator that operates over an expansive spectral range from 775 to 1550 nm on a single device. The demonstrated EO modulator exhibits half-wave voltage-length products of 0.25, 0.93, and 0.68 V·cm at wavelengths of 1539.50, 969.70, and 775.17 nm, respectively.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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