Coherent optical transmission for digital and analog applications

This paper reviews recent work on receiver-side compensation of nonlinear impairments in optical fiber transmission. Intuitively, both linear and nonlinear impairments can be compensated since they are deterministic processes. In particular, fiber transmission can be modeled using the nonlinear Schrodinger equation that can be solved by the well-known split-step Fourier transform method and fiber impairment can be compensated by propagating the received signal backward in the digital domain. The first publication on digital backward propagation (DBP) also showed that the computation complexity can be met by the advances in DSP technology even if the split-step finite-impulse filtering method, which may be more suitable for real-time implementation.

[1]  S. Savory,et al.  Electronic compensation of chromatic dispersion using a digital coherent receiver. , 2007, Optics express.

[2]  Guifang Li,et al.  Coherent optical communication , 2008, 2008 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference.

[3]  J. Kahn,et al.  Digital Equalization of Chromatic Dispersion and Polarization Mode Dispersion , 2007, Journal of Lightwave Technology.

[4]  S. Bigo,et al.  72×100Gb/s transmission over transoceanic distance, using large effective area fiber, hybrid Raman-Erbium amplification and coherent detection , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[5]  K. Kikuchi,et al.  Coherent detection of optical quadrature phase-shift keying signals with carrier phase estimation , 2006, Journal of Lightwave Technology.

[6]  Guifang Li,et al.  Impact of XPM and FWM on the digital implementation of impairment compensation for WDM transmission using backward propagation. , 2008, Optics express.

[7]  M.G. Taylor,et al.  Coherent detection method using DSP for demodulation of signal and subsequent equalization of propagation impairments , 2004, IEEE Photonics Technology Letters.

[8]  Guifang Li,et al.  Experimental demonstration of fiber impairment compensation using the split-step infinite impulse response method , 2008, 2008 Digest of the IEEE/LEOS Summer Topical Meetings.

[9]  Guifang Li,et al.  Electronic post-compensation of WDM transmission impairments using coherent detection and digital signal processing. , 2008, Optics express.

[10]  Guifang Li,et al.  Electrical Postcompensation of SOA Impairments for Fiber-Optic Transmission , 2009, IEEE Photonics Technology Letters.

[11]  R. Noe.  PLL-free synchronous QPSK polarization multiplex/diversity receiver concept with digital I&Q baseband processing , 2005, IEEE Photonics Technology Letters.