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Masters Project Integrated Optical Microsystems Group (IOMS) Optical Characterization of Rare Earth Doped Waveguides and Lasers
 

Summary: Masters Project Integrated Optical Microsystems Group (IOMS)
Optical Characterization of Rare Earth Doped Waveguides and Lasers
Introduction
Active micro and nano-photonic devices are considered critical wherever their integration
with other functional nano-structures on the same chip is required, e.g. in optical
communication and portable, airborne or space equipment. Amorphous and crystalline oxide
materials such as Al2O3 and Y2O3 doped with rare earth elements are potentially capable of
providing the required specifications. For practical realization in integrated circuits the light is
to be confined in two directions by realizing a channel waveguide structure, thus forming
waveguide lasers.
Fig. 1: Schematics of a laser waveguide and sample photoluminescence spectrum of an Er-
implanted Al2O3 ridge waveguide.
Project Description
Micro-structuring of channel waveguides will rely on using photolithographic masks and
reactive ion etching (RIE). Parameters like etch chemistry, masking material aspects and
processing values are to be thoroughly investigated and their impact on waveguide quality is
to be determined.
An important part of the project will be characterization of channel waveguides and
channel-based laser structures with external mirrors (butt-coupled dielectric mirrors). Basic
characterization of loss and gain figures is critical for the optimization of the structuring

  

Source: Al Hanbali, Ahmad - Department of Applied Mathematics, Universiteit Twente

 

Collections: Engineering