17 May 2017 Temperature-drift-immune wavelength meter based on an integrated micro-ring resonator
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Abstract
We present an integrated optical wavelength meter based on a Si3N4/SiO2 micro ring resonator (operating over a free spectral range of ≈ 2.6 nm) whose output response is immune to temperature changes. The wavelength meter readout is performed by a neural network and a non-linear optimization algorithm. This novel approach ensures a high wavelength estimation precision (≈ 50 pm). We observe a long-term reproducibility of the wavelength meter response over a time interval of one week. We investigate the influence of the ambient temperature on the estimated wavelength. We observe an immunity of the displayed output wavelength to temperature changes of up to several degrees. The temperature-drift immunity appears to be caused by deviations from the theoretically expected (perfect) transmission function of a ring resonator, i.e., caused by deviations that are usually undesired in spectroscopic devices.
Conference Presentation
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Caterina Taballione, Caterina Taballione, Temitope Agbana, Temitope Agbana, Gleb Vdovin, Gleb Vdovin, Marcel Hoekman, Marcel Hoekman, Lennart Wevers, Lennart Wevers, Jeroen Kalkman, Jeroen Kalkman, Michel Verhaegen, Michel Verhaegen, Peter J.M. van der Slot, Peter J.M. van der Slot, Klaus-Jochen Boller, Klaus-Jochen Boller, } "Temperature-drift-immune wavelength meter based on an integrated micro-ring resonator", Proc. SPIE 10242, Integrated Optics: Physics and Simulations III, 1024206 (17 May 2017); doi: 10.1117/12.2265604; https://doi.org/10.1117/12.2265604
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