Broadband polarization correction with programmable liquid-crystal modulator arrays

M. Akbulut, R. Nelson, A. M. Weiner, P. Cronin, P. J. Miller
2004 Optics Letters  
Supported by the National Science Foundation and the Purdue University Trask Fund; performed in collaboration with CRI, Inc. Key Words: lightwave communications (phrase cannot be separated), photonics, polarization-mode dispersion (phrase cannot be separated), optical signal processing (phrase cannot be separated), ultrafast optics (phrase cannot be separated), pulse shaping (phrase cannot be separated) Polarization Mode Dispersion (PMD) and Polarization-Dependent Loss (PDL) are important
more » ... are important issues in high-speed optical fiber communications, especially at bit rates of 40 Gb/s and above [1] . PMD arises from the random birefringences along the length of single-mode fibers. The result is random State Of Polarization (SOP) spectra and delay spectra after transmission, which degrade error rates in optical telecommunications. Furthermore, a number of telecommunications components like gratings and amplifiers are sensitive to input light polarization (through PDL), and one would like to have all the light at a fixed polarization before arriving at these elements. Current PMD compensator ideas work only for small bandwidths (first-order PMD), which is not desirable for wide-band telecommunication systems where the distortion caused by PMD varies substantially across the optical bandwidth.
doi:10.1364/ol.29.001129 pmid:15182008 fatcat:qb35qnhcyvhgbhp2lssm5izq24