Acousto-optic modulation based on an AlScN microring resonator for microwave-to-optical conversion
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912131628138496 |
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| author | Bian, Kewei Liu, Yushuai Rong, Weilin Dong, Yuan Zhong, Qize Qiu, Yang Zhao, Xingyan Wu, Tao Zheng, Shaonan Hu, Ting |
| author_facet | Bian, Kewei Liu, Yushuai Rong, Weilin Dong, Yuan Zhong, Qize Qiu, Yang Zhao, Xingyan Wu, Tao Zheng, Shaonan Hu, Ting |
| contents | Acoustic-optic (AO) modulation is critical for microwave and optical signal processing, computing and networking. Challenges remain to integrate AO devices on-chip using fabrication process compatible with complementary metal-oxide-semiconductor (CMOS) technology. This work presents the demonstration of an AO modulator exploiting a microring resonator (MRR) based on thin-film aluminum scandium nitride (AlScN) photonic platform. Leveraging the high piezoelectric properties of AlScN, an MRR is employed with interdigital transducer (IDT) inside to couple microwave signals into acoustic resonant modes, enabling efficient by-directional optical modulation in the MRR. The fabricated MRR exhibits an optical loaded quality factor (Q) of 1.8*e4 at the optical L-band for the TE00 mode. A low effective half-wave voltage Vpi of 1.21 V is achieved, corresponding to a VpiL of 0.0242 Vcm, along with an optomechanical single-photon coupling strength g0 of 0.43 kHz between the 2.11 GHz acoustic mode and the TE00 optical mode. The device shows potential for applications in microwave photonics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_15701 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Acousto-optic modulation based on an AlScN microring resonator for microwave-to-optical conversion Bian, Kewei Liu, Yushuai Rong, Weilin Dong, Yuan Zhong, Qize Qiu, Yang Zhao, Xingyan Wu, Tao Zheng, Shaonan Hu, Ting Optics Applied Physics Acoustic-optic (AO) modulation is critical for microwave and optical signal processing, computing and networking. Challenges remain to integrate AO devices on-chip using fabrication process compatible with complementary metal-oxide-semiconductor (CMOS) technology. This work presents the demonstration of an AO modulator exploiting a microring resonator (MRR) based on thin-film aluminum scandium nitride (AlScN) photonic platform. Leveraging the high piezoelectric properties of AlScN, an MRR is employed with interdigital transducer (IDT) inside to couple microwave signals into acoustic resonant modes, enabling efficient by-directional optical modulation in the MRR. The fabricated MRR exhibits an optical loaded quality factor (Q) of 1.8*e4 at the optical L-band for the TE00 mode. A low effective half-wave voltage Vpi of 1.21 V is achieved, corresponding to a VpiL of 0.0242 Vcm, along with an optomechanical single-photon coupling strength g0 of 0.43 kHz between the 2.11 GHz acoustic mode and the TE00 optical mode. The device shows potential for applications in microwave photonics. |
| title | Acousto-optic modulation based on an AlScN microring resonator for microwave-to-optical conversion |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2411.15701 |