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Theoretical Study of Noise Reduction of NRZ Signals Using Nonlinear Broken Microcoil Resonators

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2 Author(s)
Broderick, N.G.R. ; Optoelectron. Res. Centre, Univ. of Southampton, Southampton ; Ng, T.T.

Nonlinear microcoil resonators are extremely attractive devices for nonlinear optics; however, due to their high-Q values, their use at high speeds is limited. In this letter, we analyze a simple way of increasing their bandwidth, namely breaking the fiber in several places, and show that the resulting device is suitable for noise reduction in realistic systems. Simulations show that an in-line broken resonator can significantly reduce the impact of amplitude noise on the bit-error rate of nonreturn-to-zero signals.

Published in:

Photonics Technology Letters, IEEE  (Volume:21 ,  Issue: 7 )