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Vol. 18, Special Issue, January 2013, pp. 76-83

 

Selected papers from the 3rd International Conference on Sensor Device Technologies and Applications (SENSORDEVICES' 2012)
and The 6th International Conference on Sensor Technologies and Applications (SENSORCOMM' 2012),

19 - 24 August 2012, Rome, Italy

 

Bullet

 

Development of Specialty Optical Fiber Incorporated with Au Nano-particles in Cladding for Surface Plasmon Resonance Sensors
 

1 Seongmin JU, 1 Seongmook JEONG, 1 Youngwoong KIM, 1 Poram JEON, 1 Won-Taek HAN, 2 Seongjae BOO, 3 Pramod R. WATEKAR

1 School of Information and Communications/Department of Photonics and Applied Physics, Gwangju Institute of Science and Technology,
261 Chemdan-Gwagiro, Buk-Gu, Gwangju, 500-712, South Korea

Tel.: +82-62-715-2289, +82-62-715-2299

2 Solar City Center, Korea Institute of Industrial Technology,
1110-9 Oryong-Dong, Buk-Gu, Gwangju, 500-712, South Korea

Tel.: +82-62-600-6160, +82-62-600-6178

3 Sterlite Technologies Limited, E1, E2, E3, MIDC, Waluj, Aurangabad 431136, India

Tel.: +91-240-2558-522

E-mail: wthan@gist.ac.kr, sboo@kitech.re.kr, pramod.watekar@sterlite.com

 

Received: 15 November 2012   /Accepted: 14 December 2012   /Published: 22 January 2013

Digital Sensors and Sensor Sysstems

 

Abstract: A specialty optical fiber incorporated with Au nano-particles (NPs) in the cladding has been developed by modified chemical vapor deposition process for surface plasmon resonance (SPR) sensor applications. The cladding width and the diameter of the fabricated fiber were 2.6 μm and 124.3 μm, respectively. The incorporation of Au NPs in the cladding of the fiber preform with the average diameter of ~ 3.8 nm was confirmed by TEM and by the Raman bands appeared at 1017 to 1220 cm-1, 1243 cm-1 and 1304 cm-1. Absorption peaks of the fiber preform and the fiber appearing at 585 nm and 428 nm, respectively were due to surface plasmon resonance (SPR) of the incorporated Au NPs. The measured peak wavelength of the SPR was found to increase from 480.9 nm to 505.5 nm with refractive index (n) from 1.406 to 1.436 and the SPR sensitivity was estimated to be 820 nm/RIU.

 

Keywords: Cladding-doped optical fiber, Nano-particles, Surface plasmon resonance, Optical absorption

 

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