Session Index

Optical Design and Testing

Student Paper Award Session II
Thursday, Dec. 7, 2017  15:15-17:00
Presider: Yu-Lung Lo;Virendra Mahajan
Room: International Research Building IR6002-A(6F)
Notes:
15:15 - 15:30 Paper No.  2017-THU-S0502-O001
Riza Ariyani Nur Khasanah Award Candidate Spectroscopic Ellipsometry Study on Gold Thin Films for Biosensor Application
Riza Ariyani Nur Khasanah;Asmida Herawati;Lucky Zaehir Maulana;Eko Agus Suyono;Edi Suharyadi;Iman Santoso;Takeshi Kato;Satoshi Iwata

The study of spectroscopic ellipsometry on gold thin films with different thicknesses for biosensor application has been done. We report that Au (70 nm) produces the most sensitive detection of microalgae confirmed by the change of ellipsometer parameter, delta (62.75 degrees), at the photon energy of 2.11 eV.

 
 
15:30 - 15:45 Paper No.  2017-THU-S0502-O002
Shao-Heng Chen Award Candidate Development of Structured Light Based Measurement Technique for Wafer Warpage Measurement
Shao-Heng Chen;Bo-Yen Sun;Hung-Lin Hsieh

A structured light based measurement technique for full-field wafer surface measurement is proposed in this study. The measurement system uses structured light as its central concept, and combines design concepts of concentric grating and four-step phase-shifting method, so it is simple, highly stable and has complex detection capabilities.

 
 
15:45 - 16:00 Paper No.  2017-THU-S0502-O003
Chun-Po Tang Award Candidate Degenerate optical resonators with an intra-cavity spiral phase plate for optical vortex beam generation
Chun-Po Tang;Shang-Lin Yang;Jhih-He Tu;Yuan-Yao Lin

We propose vortex resonators, which is a degenerate optical resonator with an intra-cavity spiral phase plate (SPP) supporting rays retracing skewed V-shaped paths in the resonator. Structure lights carrying orbital angular momentum are generated by phase-locking of the rays. Optical vortex of topological charge 1 and 2 were realized experimentally.

 
 
16:00 - 16:15 Paper No.  2017-THU-S0502-O004
Yi-Pin Chen Award Candidate Rapid and Highly Integrated FPGA-based Shack-Hartmann Wavefront Sensor for Adaptive Optics System
Yi-Pin Chen;Chia Yuan Chang;Shean Jen Chen

To enhance the wavefront sensor speed reacting to variation, Camera Link interface for imaging chip is adopted. Herein, a developed Shack-Hartmann wavefront sensor with a Camera Link-based frame grabber embedded with field programmable gate array (FPGA) is adopted and could be highly integrated into optical control system.

 
 
16:15 - 16:30 Paper No.  2017-THU-S0502-O005
Yen-Lin Lee Award Candidate The High Assignment Range Shack Hartmann Sensor
Hung-Sheng Chang;Chao-Wen Liang;Yen-Lin Lee

Assignment of spots to the correct lenslet is critical to the performance of a Shack Hartmann wavefront sensor. Conventional assignment-algorithm limits the spots within a search region. This work presents a quality-guided algorithm offers a high assignment range to extend the dynamic range of a Shack-Hartmann wavefront sonsor.

 
 
16:30 - 16:45 Paper No.  2017-THU-S0502-O006
Jia-Xian Liao Award Candidate Heterodyne Wollaston Interferometer for Refractive Index Measurement
Jia-Xian Liao;Bo-yen Sun;Hung-Lin Hsieh

This study presents a heterodyne Wollaston interferometer for measuring the refractive index of transparent and translucent liquids. This technique combines the concept of heterodyne interferometry with an innovative common-optical-path design. Experiment results show that this technique has high resolution and high stability.

 
 
16:45 - 17:00 Paper No.  2017-THU-S0502-O007
I-Chou Wu Award Candidate Efficient LDA Coupling to Fiber using Genetic Algorithm Designed Nano-grating
I-Chou Wu;Yen-Yin Li;Yin-Wen Lee;Sheng-Lung Huang

For grating coupler scheme, the genetic algorithm method is used to design aperiodic grating with fine 40-nm structure to reduce coupling loss. The adoption of aperiodic grating fabricated by E-beam lithography process could reduce effect of coupling loss and reach 75% high coupling efficiency.