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Short tapered fiber sections 3-10 mm in length and 12-20 microns in diameter were fabricated through the partial etch removal of the outer silica cladding. ZnTe and Bi 2 Te 3 crystalline films 1-60 nm thick were subsequently applied to the surface of the tapered fiber sections using metalorganic chemical vapor deposition. Transmission spectra of the taper were recorded within the wavelength region of 1-1.6 μm at regular intervals whilst the deposition. Strong decreases in transmission in relatively narrow spectral bands were observed. The results can be applied to lossy mode resonance fiber sensors and passively mode-locked pulsed fiber laser designs.

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