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Waveguide shaping and writing in fused silica using a femtosecond laser

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6 Author(s)
Jiaren Liu ; Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada ; Zhiyi Zhang ; Flueraru, C. ; Xingping Liu
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Fused silica waveguides were written and reshaped with an 800-mn amplified femtosecond laser in a lateral writing configuration. The asymmetry of the waveguide shape and the index profile was partially corrected through multiple scans shifted by 1 or 2 μm. Following the careful adjustment of both laser pulse energy and writing speed, the resulting waveguides exhibited substantial reduction in propagation and coupling losses by more than 50% in the C-band.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:10 ,  Issue: 1 )