High-capacity transmission over polymer optical fiber

Abstract

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Polymer PCF Bragg grating sensors based on poly(methyl methacrylate) and TOPAS cyclic olefin copolymer

“…Therefore research has been carried out working towards the inscription of FBG sensors in both the PMMA and TOPAS PCFs in the 800nm spectral regions. Here the fibre has a much smaller attenuation of less than 10dB/m, this will therefore allow sensor lengths of 1m, thereby greatly widening the applications that can be addressed [7] .…”

“…Sensors which function at these wavelengths are limited to lengths of no longer than 10cm due to attenuations experienced of around 1dB/cm at 1550nm [7] . Although an optical adhesive splicing technique to silica fibre has been developed to allow POF grating sensors to move away from the optical bench and into application specific setups, sensors are located within a few centimetres of the fragile and bulky splices, hence limiting the range of applications [9,11] .…”

“…Building upon this is the fabrication of FBG sensors in the multimode PMMA PCF within the 800nm spectral region, taking advantage of the lower attenuation at these wavelengths of less than 10dB/m [7] . The fabrication of FBG sensors at these lower wavelengths has allowed larger lengths of the PMMA multimode PCF to be used.…”

Optimisation of polymer optical fibre based interferometric sensors

“…Various parameters have been used during simulations, such as attenuation of fibre, type of material, operating wavelength and reflectivity of mirrors in case of the Fabry-Perot interferometer. The common attenuation α of fibres [5] as well as their refractive indices n for various wavelengths [6][7][8] are depicted in Table 1. The Pockels coefficients of fused silica are P 11 =0.113 and P 12 =0.252 [9] and the Poisson's ratio is μ=0.17 [10].…”

Analysis of anticipated performance of 650-nm GaInP/AlGaInP quantum-well GaAs-based VCSELs at elevated temperatures

“…This radiation is also used in many branches of medicine, e.g., in photodynamic therapy. But its the most important application is associated with communication networks taking advantage of plastic (polymer) optical fibres (POFs) [1,2], for which the minimal optical attenuation corresponds to the 650-nm wavelength [3]. Because of relatively high POF mechanical flexibility and additionally their much larger core, for relatively short distances and moderate data rates, POFs are currently the lowest cost media to use for optical interconnect and the simplest to connectorize [4][5][6][7].…”