Publication No: 5338Search all ORC publications    

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

M.Krishnamurthi1, J.R.Sparks2, R.He2, I.A.Temnykh1, N.F.Baril2, Z.Liu3, P.J.A.Sazio4, J.V.Badding2, and V.Gopalan1

1. Department of Material Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
2. Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
3. Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
4. Optoelectronics Research Center, University of Southampton, UK

Abstract

The proof-of-concept of an infrared imaging tip by an array of infrared waveguides tapered as small as 2 μm 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 μm and 1.55 μm, 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 μm wavelength using a single tapered Ge core is also demonstrated.


Optics Express (2012) Vol.20(4) pp.4168-4175

doi: 10.1364/OE.20.004168

Southampton ePrint id: 334088

 

Click here to request a preprint of this paper. (Please mention the paper number)

 

 

 

Copyright University of Southampton 2006