Performance analysis of DAST material assisted electro-optically tuned Bloch surface wave sensor

Amit Kumar Goyal; Yehia Massoud

doi:10.1117/12.2644121

20 December 2022 Performance analysis of DAST material assisted electro-optically tuned Bloch surface wave sensor

Amit Kumar Goyal, Yehia Massoud

Proceedings Volume 12314, Optoelectronic Devices and Integration XI; 123140K (2022) https://doi.org/10.1117/12.2644121
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

In this manuscript, a 4-N, N-dimethylamino-4′ -N′ -methyl-stilbazolium tosylate (DAST) material assisted electro-optically tuned Bloch Surface Wave Sensor is proposed. The structure is designed using a one-dimensional photonic crystal (1D-PhC) structure. A top defective layer of DAST as an electro-optic material is used. The analysis shows that by illuminating the device with poly-chromatic light at an incident angle of 45.11◦ results in Bloch mode excitation at a 632.8nm operating wavelength. The analytical results also demonstrate the post fabrication 47 nm BSW wavelength tuning by applying only ±5 V potential. The structure also exhibits both wavelength stability (at varying angle) and angular stability (at varying wavelength). Moreover, the structure exhibits 105.71nm/RIU sensitivity at 0V applied bias voltage having very low FWHM of <1nm. Thus, the proposed design possesses the advantage in terms of low voltage wavelength tuning, stable response, easy fabrication, and integration capability in integrated circuits.

Conference Presentation

Citation Download Citation

Amit Kumar Goyal and Yehia Massoud "Performance analysis of DAST material assisted electro-optically tuned Bloch surface wave sensor", Proc. SPIE 12314, Optoelectronic Devices and Integration XI, 123140K (20 December 2022); https://doi.org/10.1117/12.2644121

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