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(2 person project)
An investigation into the maximum data transfer rate through a racetrack resonator was attempted by estimating the bandwidth of selected channels received at the drop port.
Shown above is a microscope image of an SOI fabricated racetrack resonator. The track widths are ~500nm. For full details on our investigation see: SOI_Final_Report
Following the submission of a mask design from Lukas Chrostowski's research group, thousands of devices were manufactured by IMEC.
At the time of our investigation, the experimental equipment did not allow the drop port to be measured due to the required orientation for the fibers and size constraints. A clever way to solve this problem suggested cutting a 45 degree angle on the output fiber and holding the fiber perpendicular to the other fibers. This scheme would couple light into the cladding of the fiber instead of the core.
A jig was machined to help polish the end of a fiber with a 45 degree cut.
The resulting fiber would take advantage of the large change in the index of refraction between the cladding and air to ensure light shining upwards could be coupled horizontally into the fiber.
A 4 degree of freedom stage was quickly constructed to control the horizontal fiber.
Additionally, an entirely new apparatus with thermal regulation, input fiber, through port fiber and alignment optics was constructed.
The through port measurement matched our predictions.
The drop port measurements and through port measurements complimented each other; validating our drop port measurement scheme.
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