Selective excitation of the TE/sub 01/ mode in hollow-glass waveguide using a subwavelength grating

In this work we demonstrate, for the first time to our knowledge, a novel subwavelength optical element for the selective excitation of the TE/sub 01/ mode inside a 300-μm bore diameter hollow-glass waveguide (HGW) in order to reduce the transmission loss. The device consists of form birefringent gr...

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Bibliographic Details
Published in:IEEE photonics technology letters 2005-07, Vol.17 (7), p.1441-1443
Main Authors: Mohammed, W.S., Mehta, A., Pitchumani, M., Johnson, E.G.
Format: Article
Language:English
Subjects:
Birefringence
Boring
Circular waveguides
Gratings
Loss measurement
multimode waveguides
optical fiber coupling
optical fiber polarization
Optical losses
Optical polarization
Optical waveguides
Propagation losses
Tellurium
Wavelength conversion
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Summary:In this work we demonstrate, for the first time to our knowledge, a novel subwavelength optical element for the selective excitation of the TE/sub 01/ mode inside a 300-μm bore diameter hollow-glass waveguide (HGW) in order to reduce the transmission loss. The device consists of form birefringent gratings, where each section is oriented in a different direction so as to convert a linearly polarized input light to a rotating polarized one matching the TE/sub 01/ mode. Using this polarization converting element, we measured a 1.65-dB decrease in the transmission loss in the HGW at a wavelength of 1.55 μm.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.848549