Observation of defects inscribed in 3D photonic band gap opal templates has been investigated by means of fluorescence of solidified photo polymer. The defects, or breaks in periodicity, have been inscribed inside the structure by two-photon polymerization (2PP) of an infiltrated hybrid polymer from the type ORMOCER ® . In-situ and ex-situ observation of the inscribed defects has been achieved with fluorescence microscopy.

A novel fiber optic localized plasmon resonance (FO-LPR) sensor composed of a D-shape optical fiber was proposed and demonstrated in the present study. The D-shape optical fiber was fabricated by a femtosecond laser micromachining system. The dimensions of the D-shape zone were 100 μm in depth measured from the surface of the polymer jacket layer, and the total length was 6 mm. After annealing treatment, the mean roughness of the surface was 231.7 nm as determined by AFM. The exposed surface of the D-shape fiber was modified with self-assembled gold nanoparticles to produce the FO-LPR sensor. The response of the sensor shows that the signal increases linearly with increasing refractive index. The sensor resolution of the sensor was determined to be 4.1×10 -4 RIU.

No abstract