40-Gb/s NRZ wavelength conversion with 3R regeneration using an EA modulator and SOA polarization-discriminating delay interferometer

• Published in: IEEE photonics technology letters Vol. 18; no. 2; pp. 337 - 339
• Main Authors: Hwan Seok Chung, Inohara, R., Nishimura, K., Usami, M.
• Format: Journal Article
• Language: English
• Published: New York IEEE 15-01-2006; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 3R regeneration; All-optical devices; Conversion; Delay; Interferometers; Modulators; Noise levels; nonreturn-to-zero (NRZ); Optical interferometry; Optical modulation; Optical polarization; Optical receivers; Optical signal processing; Optical wavelength conversion; Propagation delay; Regeneration; Repeaters; Semiconductor optical amplifiers; semiconductor optical amplifiers (SOA); Signal to noise ratio; wavelength converter; Wavelengths
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2005.861963

We propose and demonstrate, for the first time, to our knowledge, a 40-Gb/s nonreturn-to-zero wavelength converter with 3R regeneration based on an electroabsorption modulator and semiconductor optical amplifier polarization-discriminating delay interferometer. The results show that the root mean square timing jitter and optical signal-to-noise ratio (OSNR) of the regenerated signal are kept to 0.68 ps and higher than 40 dB/0.1 nm, respectively. In addition, the measured receiver sensitivity (BER=10/sup -9/) is improved from -19 to -25.2 dBm at the input OSNR of 26 dB/0.1 nm.