76 research outputs found
Reinforcement Learning for Photonic Component Design
We present a new fab-in-the-loop reinforcement learning algorithm for the
design of nano-photonic components that accounts for the imperfections present
in nanofabrication processes. As a demonstration of the potential of this
technique, we apply it to the design of photonic crystal grating couplers
(PhCGC) fabricated on a 220nm silicon on insulator (SOI) single etch platform.
This fab-in-the-loop algorithm improves the insertion loss from 8.8 dB to 3.24
dB. The widest bandwidth designs produced using our fab-in-the-loop algorithm
are able to cover a 150nm bandwidth with less than 10.2 dB of loss at their
lowest point
Cryogenic Optical Packaging Using Photonic Wire Bonds
We present the required techniques for the successful low loss packaging of
integrated photonic devices capable of operating down to 970 mK utilizing
photonic wire bonds. This scalable technique is shown to have an insertion loss
of less than 2 dB per connection between a SMF-28 single mode fibre and a
silicon photonic chip at these temperatures. This technique has shown
robustness to thermal cycling and is ultra-high vacuum compatible without the
need for any active alignment
Introduction to the OQE special issue on Numerical Simulation of Optoelectronic Devices (NUSOD’11)
Analytical modeling of silicon microring and microdisk modulators with electrical and optical dynamics
We propose an analytical time-domain model for microring and microdisk modulators, which considers both their
electrical and optical properties. Theory of the dynamics of microring/microdisk is discussed, and general solutions to the transfer matrix representation are presented. Both static and dynamic
predictions from the model are compared to measurement results to demonstrate the accuracy of our model. Static predictions
and measurements are presented for power and phase responses,
whereas dynamic predictions and measurements are presented for
small-signal and large-signal operations. The model verifies that
the chirping and modulation bandwidth of the modulators depend
on the detuning state. Finally, the accuracy and scalability of several techniques employed in the model are discussed
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