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Pao Tai Lin, Vivek Singh, Hao-Yu Greg Lin, Tom Tiwald, Lionel C. Kimerling and Anuradha Murthy Agarwal Low-Stress Silicon Nitride Platform for Mid-Infrared Broadband and Monolithically Integrated Microphotonics Advanced Optical Materials 1

Version of Record online: 17 JUL 2013 | DOI: 10.1002/adom.201300205

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A monolithic Mid-IR microphotonics platform is demonstrated by engineered Si-rich and low-stress silicon nitride (SiNx) thin films. A measured optical transmission loss of < 0.2 dB cm-1 is achieved over a broad mid-IR spectrum. Using the SiNx film an efficient mid-IR directional coupler is developed that shows a high extinction ratio of 7 dB upon wavelength scanning (λ = 2.45–2.65 μm).

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