Ultralow-VπL Silicon Electro-Optic Directional Coupler Switch With a Liquid Crystal Cladding
| Autor: | Paul K. L. Yu, S.A. Pappert, Li-Yuan Chiang, Chun-Ta Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Silicon photonics Silicon Extinction ratio business.industry chemistry.chemical_element Cladding (fiber optics) Optical switch Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Slot-waveguide chemistry Optoelectronics Power dividers and directional couplers Electrical and Electronic Engineering Photonics business |
| Zdroj: | IEEE Photonics Technology Letters. 33:796-799 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2021.3097202 |
| Popis: | An ultralow- $\text{V}_{\pi }\text{L}$ photonic switch device is demonstrated utilizing the high optical and electrical field confinement in silicon slot waveguides coupled with the strong electro-optic response of nematic liquid crystals. A silicon photonic directional coupler switch with a modulation efficiency of 0.0195 $\text{V}\cdot $ mm and a loss-efficiency product of 0.0624 $\text{V}\cdot $ dB is achieved. The 1.5 mm long device is based on two-mode interference within a single slot waveguide resulting in a $\text{V}_{\mathrm {\pi }}$ of 0.013 V and an extinction ratio of $\sim ~9$ dB at 1550 nm wavelength. The power consumption of the photonic switch is estimated to be below 0.6 nW and it possesses a response time of < 1.5 ms. A comparative performance study between the directional coupler switch and a Mach-Zehnder Interferometer (MZI) switch is performed. The directional coupler switch is projected to have a smaller footprint and lower optical loss compared to a similar design MZI switch making it a strong candidate for switch matrix designs and applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|