Polymer based single mode optical waveguide for spectroscopy applications

In this work, we present for the first time, two dimensional low loss single mode optical waveguides fabricated with EPO materials. The waveguide geometry has a rectangular shape and it is buried between two EPOCLAD layers. Its refractive index distribution has a step-index profile with an index difference of 8.6x10(-3). Realized by polymer deposition, it consists mainly, of a stack of EPOCLAD/EPOCORE/EPOCLAD layers sandwiched between two thick glass substrates. The waveguide dimensions are: 3 x 2.2 mu m(2). A cleaved single mode optical fiber, dedicated to the visible range (658 nm), is used to perform all the optical characterizations. The structure demonstrates an overall insertion loss of 2.6 dB and a numerical aperture of 0.19. Such waveguides will be used to create standing wave interference pattern using a high reflectance mirror embedded at the waveguide exit. Sampling of the pattern using an array of nano-antennas deposited on top of the waveguide yields information about the spatial distribution of the electrical field inside the waveguide. Hence, the spectral content of the signal can be deduced and the developed architecture demonstrates a strong potential for spectroscopic applications.


Editor(s):
Razeghi, M.
Baranov, A.N.
Zavada, J.M.
Published in:
Terahertz Emitters, Receivers, And Applications IV, 8846
Presented at:
Conference on Terahertz Emitters, Receivers, and Applications IV, San Diego, CA, AUG 25-26, 2013
Year:
2013
Publisher:
Bellingham, Spie-Int Soc Optical Engineering
ISSN:
0277-786X
ISBN:
978-0-8194-9696-6
Keywords:
Laboratories:




 Record created 2014-01-09, last modified 2018-09-13


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