Determination of thermo-optic coefficient of a UV curable polymer using prism coupling technique

Abstract

In this report, a new advanced prism coupler with temperature-controlled system is utilised for measuring the refractive indices and thickness of polymer thin film. This coupler is capable of measuring the variation of refractive indices with temperature. The refractive indices, n and thickness, d of the materials have been measured in the temperature range of 30°C to 80°C. The double-layered waveguide on silicon, which uses Ormocer b59 (Ormocore) as the core layer and Ormocer b66 (Ormoclad) as the bottom cladding layer, have been fabricated and used for the measurement. The thermooptic coefficients (dn/dt) for both materials have been obtained.

High-Sensitivity Temperature Sensor Based on a Selectively-Polymer-Filled Two-Core Photonic Crystal Fiber In-Line Interferometer

“…In the figure, the experimentally measured value of d( n)/dT= −4.84 × 10 −6 /°C (from Fig. 5) for the x-polarization yields the TO coefficient of −390 × 10 −6 /°C and this is in the acceptable range for polymer materials [16], [18]. For the y-polarization, the simulation result of d( n)/dT = −4.27 × 10 −6 /°C was obtained from the same TO coefficient of the polymer.…”

Novel quantum dot and nano-entity photonic structures

“…are BASF® Lucirin® TPO and Ciba® IRGACURE® 369 shown schematically in Figure 2-30.Hybrid organic-inorganic materials studied here for the implementation of photonic structures are the UV polymerizable OrmoCore®, OrmoClad® ‡ supplied by micro resist technology GmbH (Berlin, Germany). 122 Both belong to the ORMOCER family (OrmoCore is ORMOCER b59 while OrmoClad is ORMOCER b66123,124 ) initially developed by the Fraunhofer Institute for Silicate Research (ISC) in Würzburg, Germany, and are specially design for application in directly UV patterned planar optical waveguides. Another material from the same supplier is OrmoStamp®…”