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Polymer micro-ring filters and modulators

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4 Author(s)
P. Rabiei ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA ; W. H. Steier ; Cheng Zhang ; L. R. Dalton

Micro-ring wavelength filters and resonant modulators using polymer materials at 1300 nm and 1550 nm are analyzed, designed, and demonstrated. The rings are integrated with vertically coupled input and output waveguides. The devices are fabricated using optical lithography. Filters with a finesse of 141 and free spectral range of 5 nm at 1300 nm and finesse of 117 with a free spectral range (FSR) of 8 nm at 1550 nm are demonstrated. Ring resonators with a Q as high as 1.3 × 105 at 1300 nm are demonstrated. The filters can be temperature tuned at the rate of 14 GHz/°C. Resonant ring modulators, which use an electrooptic polymer, are demonstrated. The resonance wavelength voltage tunes at the rate of 0.82 GHz/V. The modulators have a bandwidth larger than 2 GHz. Using the resonant modulator, and open eye diagram at 1 Gb/s is demonstrated.

Published in:

Journal of Lightwave Technology  (Volume:20 ,  Issue: 11 )