Abstract

A stereo resonating system, including two cascaded Panda resonators with two small rings is proposed as a microscale active stereo system. The optical transfer functions of the Panda stereo system for two input ports and one output port are derived using the coupled mode theory. The feasibility of the Panda stereo system to realize three-dimensional content is investigated by applying different coupling coefficients and materials to each Panda resonator. The effect of the coupling strength of the ${3} \times {3}$ coupler on the output light is also studied. It is interesting that a portion of input light into the Panda stereo system can undergo a wavelength shift and an intensity shift by adjusting the coupling coefficients of the ${3} \times {3}$ coupler together with fine-tuning the refractive index of one of the Panda resonators. Results show that a change of the ${3} \times {3}$ coupler brings about a shift from 0.1 to 37 dB in light transmission and applying a change of $\delta n = 0.01$ in the refractive index of one of the Panda resonators generated a phase shift larger than $\pi /{4}$, which is required for image depth reconstruction. The advantages of the proposed Panda stereo system compared to the conventional stereo technology are low cost and a microsize, with a simple structure and the ability to work in a different wavelength spectrum range.

© 2019 Optical Society of America

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