Citation:Mughal, M. J. and Riza, N. A. (2004) 'Variable fiber optic attenuator using a bulk-micromachined deformable micromirror', Optical Engineering 43(10), pp. 2214-2215. doi: 10.1117/1.1786940
A compact fiber variable optical attenuator (VOA) with <1-dB insertion loss and >25-dB dynamic range is proposed and demonstrated at the 1550-nm band using a fiber collimator lens and a bulk-micromachined deformable micromirror. Three versatile VOA designs are presented that exploit the principle of 3-D beam spoiling to achieve broadband polarization insensitive attenuation using simple single-drive controls.
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