Fabrication and Testing

Project 1: Fabrication and Testing of Rectangular Fiber Grating Coupler and GARC Coupler

Circular grating for the GARC coupler and partially etched rectangular grating coupler

Fully etched focusing grating with nonuniform grating grooves (optimized by genetic algorithm) and uniform grating grooves

Optical setup for the fiber-grating coupling measurement

Project 2: Fabrication of Self-Aligned Fiber Fixture

A self-aligned part fabricated using two-photon polymerization (version 1)

Pit etched into Si using KOH (images are focused at different depths)

Assembled fiber alignment fixture (looking from the bottom, including version 2 self-aligned part and Si etch pit)

Assembled chips using self-alignment structures (looking from the top)

Animated process of self-alignment structure assembly (version 3)

Cross-sectional views of the self-alignment structure (version 3)

Assembled self-alignment structure (version 3)

Project 3: Fabrication and Testing of Carbon Nanotube Transistor