In our previous research, a novel demodulation technique based on α-shape Delaunay triangulation (D-T) was developed to obtain the refractive index of medium surrounding optical fibre using envelope cladding peaks from spectrum tilted Bragg grating (TFBG) sensor. This demonstrated be efficient, easy implement, powerful, faster than ones and applicable for real-time measurements. this paper, dee...

An optical fiber with nano-electromechanical functionality is presented. The fiber exhibits a suspended dual-core structure that allows for control of the optical properties via nanometer-range mechanical movements. We investigate electrostatic actuation achieved by applying a voltage to specially designed electrodes integrated in the cladding. Numerical and analytical calculations are preforme...

We propose a new hole-assisted polymer optical fiber design to eliminate the influence of dopant diffusion and to increase the UV writing efficiency in fiber Bragg grating inscription. The optical waveguide is formed inside a solid core surrounded by a ring of 3 large air holes in enhanced UV photosensitive PMMA with double-cladding. We determined a map of the single-mode and multi-mode phase t...

Morphology-dependent resonances (MDR’s) of polystyrene microspheres were excited by an optical fiber coupler. For optical elimination of the air–cladding interface at the optical fiber coupler surface, the microsphere was immersed in an index-matching oil. MDR’s were observed, even though the relative refractive index between the microsphere and the oil was only 1.09. The observed MDR spectra a...

Optical microelectromechanical systems (MEMS) combine miniature optical components with precision fixtures, elastic suspensions, and microactuators, and allow complex functionality at low cost. However, the effect of the bounded nature of the beams propagating through the system on design is profound. The current paper reviews the fundamental consequences. Using a Gaussian beam formulation, mod...

We report on our progress towards the integration of nonreciprocal optical elements in, for example, an integrated optical waveguide isolator on conventional semiconductor photonic platforms. Our approach uses an evanescent interaction with a magneto-optic iron garnet upper cladding. Specifically, ceriumand bismuthsubstituted yttrium and terbium iron garnets were investigated. Device fabricatio...

The development of lightwave communications over the last 2 decades has been particularly dependent on careful metrology to support product specification and standardization. Some estimates have suggested that as much as 20% of the selling price of a fiber is associated with measurements. This perhaps explains the continuing success of the biennial Symposium on Optical Fiber Measurements as an ...

Photonic crystal fiber interferometers (PCFIs) with superiority of the unique fiber structure have been extensively developed as the all-fiber based strain () [1], external refractive index (RI) [2], chemical [3] and bending sensors [4]. The majority of the valuable applications on the fiber-optic sensing are all accredited to the air voids structured periodically in the photonic crystal fibe...