A magnifying fiber element with an array of sub-wavelength Ge/ZnSe pixel waveguides for infrared imaging

作者：Krishnamurthi Mahesh^*; Barnes Eftihia; Sparks Justin R; He Rongrui; Baril Neil F; Sazio Pier J A; Badding John V; Gopalan Venkatraman

来源：Applied Physics Letters, 2012, 101(2): 021108.

DOI：10.1063/1.4734787

We demonstrate an array of tapered Ge-core/ZnSe-cladding waveguides in a silica fiber matrix for infrared image transfer and a pixel magnification of 3.5 x at 3.39 mu m and 10.64 mu m wavelengths. The structure was synthesized by a high-pressure chemical vapor deposition technique to deposit the semiconductor waveguides within the holes of a silica based microstructured optical fiber. The core/cladding structure reduces the optical propagation loss through the waveguides, and good isolation between the pixels is demonstrated. With further material improvements, these structures could be useful for applications such as infrared endoscopic imaging.

• 出版日期2012-7-9