Design and demonstration of direct UV-written small angle X couplers in silica-on-silicon for broadband operation

Experimental demonstration of small angle (0.8 degrees-5 degrees ) direct UV-written X couplers in silica-on-silicon is presented. Maximum and minimum coupling ratios of 95%(+/-0.8%) and 1.9% (+/-1%), respectively, were recorded. The structures also display very low polarization and wavelength depen...

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Published in:Applied optics (2004) 2006-08, Vol.45 (24), p.6113-6118
Main Authors: Adikan, Faisal R M, Gawith, Corin B E, Smith, Peter G R, Sparrow, Ian J G, Emmerson, Gregory D, Riziotis, Christos, Ahmad, Harith
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container_end_page 6118
container_issue 24
container_start_page 6113
container_title Applied optics (2004)
container_volume 45
creator Adikan, Faisal R M
Gawith, Corin B E
Smith, Peter G R
Sparrow, Ian J G
Emmerson, Gregory D
Riziotis, Christos
Ahmad, Harith
description Experimental demonstration of small angle (0.8 degrees-5 degrees ) direct UV-written X couplers in silica-on-silicon is presented. Maximum and minimum coupling ratios of 95%(+/-0.8%) and 1.9% (+/-1%), respectively, were recorded. The structures also display very low polarization and wavelength dependence. A typical excess loss of 1.0 dB(+/-0.5 dB) was recorded. Device modeling using the beam propagation method and an analytical model showed good agreement with experimental results over a broad crossing angle and wavelength range.
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title Design and demonstration of direct UV-written small angle X couplers in silica-on-silicon for broadband operation
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