Kaji Takahiro, Morohashi Isao, Tominari Yukihiro, Sekine Norihiko, Yamada Toshiki, Otomo Akira
Opt Express. 2021 Sep 13;29(19):29604-29614. doi: 10.1364/OE.434028.
In this study, W-band (75-110 GHz) antenna-coupled optical modulators with a cyclo-olefin polymer (COP) lower cladding, an electro-optic (EO) polymer waveguide, and a gap-embedded patch antenna array were fabricated using a transfer and bonding method of a poled EO polymer film. A carrier-to-sideband ratio (CSR) of 56 dB corresponding to an optical phase shift of 3 mrad was obtained under irradiation with 100 GHz electromagnetic waves with a power of 12.8 W/m. Our devices have the potential to achieve highly efficient wireless-optical signal conversion in radio-over-fiber (RoF) systems.
在本研究中，采用极化电光（EO）聚合物薄膜的转移和键合方法，制备了具有环烯烃聚合物（COP）下包层、电光（EO）聚合物波导和间隙嵌入式贴片天线阵列的W波段（75 - 110 GHz）天线耦合光调制器。在功率为12.8 W/m的100 GHz电磁波照射下，获得了对应于3 mrad光相移的56 dB载波与边带比（CSR）。我们的器件有潜力在光纤无线电（RoF）系统中实现高效的无线光信号转换。
