IN-BAND AMPLIFIED SPONTANEOUS EMISSION NOISE FILTERING WITH A DISPERSION-IMBALANCED NONLINEAR LOOP MIRROR

This paper reports the removal of in-band amplified spontaneous emissi on (ASE) noise in a 10 Gb/s noise-loaded return-to-zero (RZ) signal us ing a dispersion-imbalanced loop mirror. The resulting receiver sensit ivity is improved from -37.0 dBm to -37.7 dBm, The dependence of recei ver sensitivity on the loop mirror bias is also investigated, and the optimal bias point is found to be where the loop transmissivity decrea ses with increasing input power.