Employing higher order cladding modes of fiber Bragg grating for analysis of refractive index change in volume and at the surface
Sankhyabarata Bandyopadhyay , Liyang Shao , Mateusz Jakub Śmietana , Chao Wang , Jie Hu , Guoqing Wang , Huang Wei-Te , Guoqiang Gu , Yang Ya Tao
AbstractIn this work, a detailed study on volume and surface refractive index (RI) sensitivity of cladding modes for a fiber Bragg grating (FBG) based sensor is presented. Surface RI sensitivity of the cladding mode of FBGs has been illustrated and quantified with the concept of add-layer sensitivity for the first time to the best of our knowledge. A detailed investigation of mode transition of higher-order cladding modes has been revisited and important characteristics of the cladding modes are observed which could open a new designing path of fabrication and innovative way of use of this family of optical fiber grating-based sensors. The effect of “mode transition” of higher-order cladding modes, higher operating wavelength for respective cladding mode and “mode stretching” effects are combined together to achieve higher volume and surface RI sensitivity of cladding mode of FBG. It has been shown numerically that with proper designing, sub-nanometer (~0.04 nm) attachment of target analyte could be recognized by cladding mode of FBG which is quite promising for application in optical fiber grating bio-sensors. This critical designing method of FBG based surface refractometer would be very helpful in case of fabrication of highly sensitive sensors for distinct bio-chemical applications.
|Journal series||IEEE Photonics Journal, ISSN 1943-0655, e-ISSN 1943-0647|
|Publication size in sheets||0.6|
|Project||DIAMSEC-ultra-sensitive sensory platform for rapid detection of epidemiological and pandemic threats. Project leader: Śmietana Mateusz Jakub,
, Phone: (22) 234 63 64, application date 04-11-2016, start date 01-06-2017, planned end date 31-05-2020, MO/2016/7, Implemented
|Score||= 100.0, 14-09-2020, ArticleFromJournal|
|Publication indicators||= 0; = 1; : 2018 = 1.129; : 2018 = 2.729 (2) - 2018=2.759 (5)|
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