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17 March 2023 Whispering gallery mode excitation in microresonator integrated in deep-seated negative axicon for volatile gas sensing
Jasleen Kaur, Kaushal Vairagi, Pooja Gupta, Samir K. Mondal
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Proceedings Volume 12424, Integrated Optics: Devices, Materials, and Technologies XXVII; 1242415 (2023) https://doi.org/10.1117/12.2649939
Event: SPIE OPTO, 2023, San Francisco, California, United States
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Abstract
We introduce an integrated Whispering Gallery Mode (WGM) resonator in reflection mode for sensing. The design includes a Deep Seated Negative Axicon (DSNA) embedded with WGM resonator. DSNA is fabricated in photosensitive optical fiber (GF4-A) by chemical etching. The reflected signal indicating Q factor ~6x103 is achieved. The developed WGM resonator is used to sense Toluene with sensitivity of 1.73nm/RIU.
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Jasleen Kaur, Kaushal Vairagi, Pooja Gupta, and Samir K. Mondal "Whispering gallery mode excitation in microresonator integrated in deep-seated negative axicon for volatile gas sensing", Proc. SPIE 12424, Integrated Optics: Devices, Materials, and Technologies XXVII, 1242415 (17 March 2023); https://doi.org/10.1117/12.2649939
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KEYWORDS
Microresonators
Whispering gallery modes
Resonators
Axicons
Sensors
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