Coupling in a twin-core microstructured polymer optical fiber

Abstract

Theoretical calculations and experimental results are reported for a microstructured polymer optical fiber twin-core coupler. Beat lengths are calculated using a fully vectorial, Fourier decomposition method, which show that the beat length is extremely sensitive to any core asymmetry. Reasonably good agreement between theory and experiment is obtained.

Dual hollow-core anti-resonant fibres

“…However, there have been several theoretical and experimental reports of dual (solid) core PCFs with coupled cores [9][10][11][12][13][14][15] . In particular the characteristics of dual solid core PBGFs have been studied and interesting properties such as decoupling of the cores at the shorter wavelength edge of the bandgap and inversion of the usual order of the super-modes with respect to propagation constant were found 12 .…”

Label-free biosensing with high sensitivity in dual-core microstructured polymer optical fibers

“…Dual-core MOFs were first fabricated in silica by Mangan et al [25] and in polymer by Padden et al [26], with some of the early modeling work being done by Hansen and Town [27,28]. The main advantage of considering polymer MOFs and PMMA is that biomolecules can be attached directly to the surface of the holes of the fiber [24], avoiding in this way any further functionalization; combined with the fact that mPOFs can now be routinely fabricated with a wealth of different structures [29].…”

Measurements of polarimetric sensitivity to hydrostatic pressure, strain and temperature in birefringent dual-core microstructured polymer fiber

“…In such a case, light is guided in the form of orthogonally polarized even and odd supermodes spreading simultaneously over both cores. This effect was investigated previously in silica microstructured fibers [18,19,25]. In Fig.…”

“…As mPOF fabrication is based on preform drilling it assures more flexibility in shaping fiber geometry than the stack and draw approach. Fibers with symmetry other than hexagonal can be fabricated [16], including structures with concentric rings of holes [17], dual core mPOF [18,19], elliptical core mPOF [20], mPOF with elliptical holes in the cladding [21] and hollow core mPOF [22]. The possibility of fabrication of Bragg gratings and long period gratings in mPOF was also demonstrated and several sensing applications of such elements have been already studied [23,24].…”