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F2-laser micromachining of fibre-tipped Mach-Zehnder interferometer

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2 Author(s)
Li, J. ; Dept. of Electr. & Comput. Eng., Univ. of Toronto, Ont., Canada ; Herman, P.R.

A compact Mach-Zehnder interferometer (MZI) with high 27 dB modulation ratio was fabricated on the end facet of a singlemode optical fibre by F2-laser micromachining. The deep ultraviolet (157 nm) laser excised a shallow phase-shift channel across one-half of the fibre core to generate sinusoidal interference spectra controllable by the laser-etch depth.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 10 )