Fully tunable Fabry-Pérot cavity based on MEMS Sagnac loop reflector with ultra-low static power consumption

Autor: Young Jae Park, Man Jae Her, Youngjae Jeong, Dong Ju Choi, Dong Uk Kim, Min Gi Lim, Myung Seok Hong, Hyug Su Kwon, Kyoungsik Yu, Sangyoon Han
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Microsystems & Nanoengineering, Vol 10, Iss 1, Pp 1-11 (2024)
Druh dokumentu: article
ISSN: 2055-7434
DOI: 10.1038/s41378-024-00728-y
Popis: Abstract The Fabry-Pérot interferometer, a fundamental component in optoelectronic systems, offers interesting applications such as sensors, lasers, and filters. In this work, we show a tunable Fabry-Pérot cavity consisting of tunable Sagnac loop reflectors (SLRs) and phase shifters based on electrostatic microelectromechanical (MEMS) actuator. The fabrication process of the device is compatible with the standard wafer-level silicon photonics fabrication processes. This electrostatic actuation mechanism provides well-balanced, scalable pathways for efficient tuning methodologies. The extinction ratio of the continuously tunable SLRs’ reflectivity is larger than 20 dB. Full 2π phase shifting is achieved, and response times of all the components are less than 25 μs. Both actuators have extremely low static power, measuring under 20 fW and the energy needed for tuning is both below 20 pJ.
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