Surface plasmon resonance (SPR) infrared sensor based on D-shape photonic crystal fibers with ITO coatings

Milled Microchannel-Assisted Open D-Channel Photonic Crystal Fiber Plasmonic Biosensor

“…The highest SA of the sensor is found to be 328 RIU -1 . [12] D-shaped 20,000 1.18-1.36 [35] Concave shaped 10,700 1.19-1.29 [36] D-shape 15,000 1.22-1.33 [9] Square lattice 40,000 The effect of metal layer thickness variations has been studied on the SA and depicted in Fig. 8 (a) and (b).…”

“…The wide analyte sensing range includes any liquid analyte having a refractive index range of 1.14-1.36 RI. References [12], [34]- [36] illustrate sensor works targeted for low analyte RI detections. However, with our non-linear rise of wavelength sensitivity, the sensing readings are much higher in a broader sensing range of analytes.…”

One-Dimensional Photonic Crystal Inner Coated Hollow Fiber Sensor Based on Bloch Surface Wave With Ultra-High Figure of Merit

“…A typical kind of surface electromagnetic wave is the surface plasmon polaritons (SPPs) which are usually excited at the interface between metallic and dielectric media. As the high sensitivity of SPPs to the surface properties [1], [2], surface plasmon resonance (SPR) sensors have been widely used for imaging and sensing [3]- [7]. Bloch surface wave (BSW), another kind of surface wave which propagates at the interface between the dielectric media and one-dimensional photonic crystal (1DPC), has attracted much attention in the last decade [8]- [10].…”

Highly Sensitive Hydrogen Sensor Based on Palladium-Coated Tapered Optical Fiber at Room Temperature

“…Most fiber-optic sensors need some modification to the cladding to make it sensitive to its surroundings [8]. These modifications include chemical etching [9], side polishing [10], or shape-D [11]. In this research, dissolved tapered optical fiber-coated palladium is used to detect gaseous hydrogen.…”