Development of a multi-function sensor for HV apparatus

The proposed research aims to develop a novel fiber optic based technology for the monitoring and detection of defaults in power transformers, which could lead to an in-service failure and power outages. The partner company has developed a sensor that is sensitive to vibration and moisture. Also, small electrical sparks, known as partial discharges, in high-voltage equipment generate acoustic waves that can also be detected in a similar way than vibrations.

Terahertz Distributed Sensing Platform Based on Waveguide Bragg Gratings

Distributed sensing is an advanced technology that enables real-time monitoring of variations along the entire length of a waveguide, and offers the possibility of sensing from a long distance. In the optics domain, distributed sensing based on optical fibers has been successfully demonstrated. However, the realization of distributed sensing in the terahertz domain is still at an embryonal stage.

Power transformers reliability modeling with data obtained in structure monitoring using fiber optics sensing

The intern will work on building power transformers’ aging models based on reliability theories and actual field test data collected using optic fiber based health monitoring technologies. This is part of a novel solution to handle the accident prevention and maintenance for major power and grid equipment. The novelty lies in that the model verification and execution will be realized with physical parameters directly obtained from transformers in real-time. The data used will be those collected on in-service transformers.

Rotational Doppler shift with optical vortices in the backward-wave phase-matching process, as probe for improved vibration sensing - Year two

The rotational Doppler shift in the nonlinear optical process will improve the precision and resolution of the detection of the dynamics of an object, particularly the resolution of its rotational motion. The project aims at the design, realization and study of rotational Doppler shift based on the nonlinear interaction specifically tailored for the backward-wave phase matching.

Rotational Doppler shift with optical vortices in the backward-wave phase-matching process, as probe for improved vibration sensing

Optical vortices have recently attracted great interest in many fields of scientific and technologi-cal research. The proposed project aims to experimentally verify the rotational Doppler shift in the nonlinear optical regime using optical vortices. The frequency shift sensed through optical vortices in the nonlinear interaction is expected to be proportional to the order of the optical vortex.

Terahertz metamaterial sensors for monitoring of the insulation material quality - Year Two

A partial discharge is a localized spark that bridges a small portion of the insulation between two conducting electrodes under high voltage. The lifetime of high voltage electronic devices is often determined by the ability of the insulation material to withstand partial discharges, which start within gas voids in solid polymer insulation. A typical monitoring of insulation for voids and cracks requires long measurement times.

Terahertz “Teramometry” for Diverse Applications

Two out of five Canadians are expected to develop cancer and one out of four Canadians is expected to die from cancer. For treatment of Melanoma, a dangerous skin cancer, plasmonic photo-thermal therapy is applied for precisely localized plasmonic heating of gold nanoparticles to kill cancer. One of the major challenges in heating applications involves precise temperature measurements. Current approaches are inconvenient, inaccurate, or costly. Thus, there exists a need to develop non-contact and non-invasive temperature sensing technologies e.g.

Pollution control of gas mixtures: gas monitoring and detection of contaminants usingnovel THz technology

Electric power plants are the number one toxic air polluters in North America. The emitted pollutants are proven to cause serious health and environmental issues. The emission of Carbon dioxide and of other pollutants, such as nitrogen oxides, sulfur dioxide - major drivers of the human-accelerated global climate change- must be monitored insitu. Our goal for the present project is to explore the properties of Terahertz radiation for control of pollution in the atmosphere. In particular, we intend to develop a new waveguide-integrated gas monitor, based on Bragg grating sensors.

Fiber-optic monitoring of pipes and pipelines

We will develop a fiber-optical sensor system that can be applied to monitor pipelines. By recording the response of a fiber-optic transducer to ultrasound that is generated on the wall of a pipeline we can measure the flow velocity of the fluid inside the pipeline. Similar measurements are presently conducted by pipeline operators using piezo-electric transducers, but their sensitivity is not high enough to locate small leaks or pipeline deposits through a change in flow rate. In addition the ultrasound measurements will let us accurately determine the identity of the pipeline content.