Abstract
We demonstrate miniature Mach-Zehnder-interferometer with a device length of 179.5 μm using two micro-abrupt-tapers in a cladding-depressed strongly-guiding fiber. The index variation of 2×10−3 from a 6.3 picoliter optical liquid can cause 1.6 nm wavelength-shift.
© 2011 Optical Society of America
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