A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable i
- PDF / 3,720,477 Bytes
- 15 Pages / 595.22 x 842 pts (A4) Page_size
- 11 Downloads / 173 Views
A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers Mojtaba HOSSEINZADEH SANI1, Hamed SAGHAEI2*, Mohammad Amin MEHRANPOUR3, and Afsaneh ASGARIYAN TABRIZI4 1
Department of Electrical Engineering, Imam Reza International University, Mashhad 9138833186, Iran
2
Department of Electrical Engineering, Shahrekord Branch, Islamic Azad University, Shahrekord 8813733395, Iran
3
Department of Electrical Engineering, Sari Branch, Islamic Azad University, Sari 4816119318, Iran
4
Academic Center for Education, Culture, and Research (ACECR), Tabriz 5156845195, Iran
*
Corresponding author: Hamed SAGHAEI
E-mail: [email protected]
Abstract: In view of the large scientific and technical interest in the MEMS accelerometer sensor and the limitations of capacitive, resistive piezo, and piezoelectric methods, we focus on the measurement of the seismic mass displacement using a novel design of the all-optical sensor (AOS). The proposed AOS consists of two waveguides and a ring resonator in a two-dimensional rod-based photonic crystal (PhC) microstructure, and a holder which connects the central rod of a nanocavity to a proof mass. The photonic band structure of the AOS is calculated with the plane-wave expansion approach for TE and TM polarization modes, and the light wave propagation inside the sensor is analyzed by solving Maxwell’s equations using the finite-difference time-domain method. The results of our simulations demonstrate that the fundamental PhC has a free spectral range of about 730 nm covering the optical communication wavelength-bands. Simulations also show that the AOS has the resonant peak of 0.8 at 1.644 µm, quality factor of 3 288, full width at half maximum of 0.5 nm, and figure of merit of 0.97. Furthermore, for the maximum 200 nm nanocavity displacements in the x- or y-direction, the resonant wavelengths shift to 1.618 µm and 1.547 µm, respectively. We also calculate all characteristics of the nanocavity displacement in positive and negative directions of the x-axis and y-axis. The small area of 104.35 µm2 and short propagation time of the AOS make it an interesting sensor for various applications, especially in the vehicle navigation systems and aviation safety tools. Keywords: Photonic crystal; MEMS; accelerometer sensor; tunable resonator; finite-difference time-domain method Citation: Mojtaba HOSSEINZADEH SANI, Hamed SAGHAEI, Mohammad Amin MEHRANPOUR, and Afsaneh ASGARIYAN TABRIZI, “A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers,” Photonic Sensors, DOI: 10.1007/s13320-020-0607-0.
1. Introduction Photonic crystals (PhCs) can be used as
appropriate structures for creating all-optical systems and networks due to the low loss and high capability in guiding and controlling the light [1, 2].
Received: 19 March 2020 / Revised: 10 September 2020 © The Author(s) 2020. This article is published with open access at Springer
Data Loading...
