All-Silica Hollow-Core Microstructured Bragg Fibers for Biosensor Application

Current status of micro- and nano-structured optical fiber sensors

“…It also features a high resolution and simple demodulation process. It was demonstrated that HC-PCF can be used for the detection of single-stranded deoxyribonucleic acid (SS-DNA) [90]. If the DNA molecules in the aqueous solution form a 20 nm-thick surface inside the all-silica micro-structured HC Bragg fiber, the Bragg fiber confinement loss (CL) properties are changed.…”

Photonic Crystals in Bioassays

“…With the immobilization of double‐stranded DNA monolayer into the poly( L ‐lysine) modified holes, the resonant wavelength of the PCF‐LPG shift 2.3 nm, which could be estimated a refractive index units (RIU) sensitivity of approximately 10 −4 . In order to accurately analyze the sensoring properties of the PC fiber biosensor, Passaro et al exploited the all‐silica hollow‐core microstructured PC fibers to detect the DNA hybridization process ( Figure ) 23, 190. In this research, they found a 100 nm shift and a 3 dB increase of the confinement loss minimum before and after the potential hybridization 23.…”

“…This paper focus on the design and application of PC films, PC microcarriers, PC fibers, and PC optofluidics (bottom four photos) in bioassays. PC Fibers image reproduced with permission 23. Copyright 2008, IEEE.…”

Refractive Index Sensing in an All-Solid Twin-Core Photonic Bandgap Fiber

“…In particular, MOFs with a periodic microstructure (i.e., photonic crystal fibers) can be designed to guide light in a low index region (e.g., air hole) by the photonic bandgap (PBG) effect [12], [13]. All-solid PBG MOFs have also been demonstrated [14]- [17].…”