Optical deposition of carbon nano-particles on waveguides

• Main Author: Nguyen, Duy Anh.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Final Year Project
• Language: English
• Published: 2012
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
• Online Access: http://hdl.handle.net/10356/48828
• Institution: Nanyang Technological University

The novel optical properties of carbon-based materials such as nanotubes or graphene have recently attracted significant interest. They have been demonstrated to have a fast saturable absorption with subpicosecond recovery times in the near infrared communication band. A variety of techniques have been implemented in order to integrate carbon nanotubes (CNT) into fiber/waveguide devices. However, one of their drawbacks is the handling method. Recently, a novel technique was demonstrated for optically-driven deposition of carbon nanotubes on fibers using optical tweezer effect on nano particles. This project focuses on the investigation of optically-driven deposition of carbon-based nano particles on various optical waveguides/fibers. The studies will include building up models of optical tweezer effect on different particles and waveguides. A fiber laser incorporating CNT as saturable absorbers (SA) is mode locked to generate ultra-short pulse. The project will partially involve the fabrication of CNT-based devices with such technique and their optical measurements for communications applications.