Phase-preserving amplitude regeneration for a WDM RZ-DPSK signal using a nonlinear amplifying loop mirror.

We propose a modified nonlinear amplifying loop mirror (NALM) for phase-preserving 2R regeneration of wavelength division multiplexed (WDM) return-to-zero differential phase-shift-keyed signals. As proof of principle the regeneration capability of this NALM setup has been investigated experimentally for two 10 Gbit/s wavelength channels. A significant eye-opening improvement and a negative power penalty of 1.2 dB have been observed in both channels.

[1]  J. Gordon,et al.  Phase noise in photonic communications systems using linear amplifiers. , 1990, Optics letters.

[2]  M. Matsumoto,et al.  Performance improvement of phase-shift-keying signal transmission by means of optical limiters using four-wave mixing in fibers , 2005, Journal of Lightwave Technology.

[3]  S. Boscolo,et al.  Design of Raman-based nonlinear loop mirror for all-optical 2R regeneration of differential phase-shift-keying transmission , 2006, IEEE Journal of Quantum Electronics.

[4]  D. Moss,et al.  Ultrafast all-optical chalcogenide glass photonic circuits , 2007, 2007 Conference on Lasers and Electro-Optics - Pacific Rim.

[5]  Michael Vasilyev,et al.  All-optical multichannel 2R regeneration in a fiber-based device. , 2005, Optics letters.

[6]  C.W. Chow,et al.  Asynchronous Digital Optical Regenerator by an EAM-loop for 4 × 40Gb/s WDM to 160Gb/s OTDM Conversion , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[7]  S.K. Turitsyn,et al.  All-Optical Passive 2R Regeneration for N×40 Gbit/s WDM Transmission Using NOLM and Novel Filtering Technique , 2002, 2002 28TH European Conference on Optical Communication.

[8]  D. B. Mortimore,et al.  Fiber loop reflectors , 1988 .

[9]  A.H. Gnauck,et al.  Optical phase-shift-keyed transmission , 2005, Journal of Lightwave Technology.

[10]  G. Leuchs,et al.  2R-Regeneration of an RZ-DPSK Signal Using a Nonlinear Amplifying Loop Mirror , 2007, IEEE Photonics Technology Letters.