Array of tapered semiconductor waveguides in a fiber for infrared image transfer and magnification

作者：Krishnamurthi M^*; Sparks J R; He R; Temnykh I A; Baril N F; Liu Z; Sazio P J A; Badding J V; Gopalan V

来源：Optics Express, 2012, 20(4): 4168-4175.

DOI：10.1364/OE.20.004168

The proof-of-concept of an infrared imaging tip by an array of infrared waveguides tapered as small as 2 mu m is demonstrated. The fabrication is based on a high-pressure chemical fluid deposition technique to deposit precisely defined periodic arrays of Ge and Si waveguides within a microstructured optical fiber template made of silica to demonstrate the proposed concept at wavelengths of 10.64 mu m and 1.55 mu m, respectively. The essential features of the imaging system such as isolation between adjacent pixels, magnification, optical throughput, and image transfer characteristics are investigated. Near-field scanning at 3.39 mu m wavelength using a single tapered Ge core is also demonstrated.

• 出版日期2012-2-13