Title :
Wavelength blocking filter with flexible data rates and channel spacing
Author :
Ryf, R. ; Su, Y. ; Moller, L. ; Chandrasekhar, S. ; Xiang Liu ; Neilson, D.T. ; Giles, C.R.
Author_Institution :
Lucent Technol., Bell Labs., Holmdel, NJ, USA
Abstract :
This work presents a high-resolution (13.2 GHz) channel-blocking optical filter, suitable for use as a reconfigurable optical add/drop multiplexer (ROADM), which seamlessly supports data rates from 2.5 to 160 Gb/s. The filter consists of a linear array of 64 MEMS micromirrors and a high-dispersion echelle grating. The demonstrated device had an insertion loss of 9 dB, a loss ripple of 1.2 dB, and a group delay ripple of 15 ps. Data transmission through the device with various mixed data rate scenarios ranging from 2.5 to 160 Gb/s showed negligible penalty, except at 40 Gb/s where a maximum penalty of 1.5 dB was observed due to a phase coherence with the blocker filter ripple.
Keywords :
channel spacing; diffraction gratings; micromechanical devices; micromirrors; multiplexing equipment; optical arrays; optical dispersion; optical fibre communication; optical filters; optical losses; 13.2 GHz; 15 ps; 2.5 to 160 Gbit/s; 9 dB; MEMS; blocker filter ripple; channel spacing; channel-blocking filter; data transmission; flexible data rates; group delay ripple; high-dispersion echelle grating; insertion loss; linear array; loss ripple; micromirrors; mixed data rate scenarios; optical filter; phase coherence; reconfigurable optical add/drop multiplexer; wavelength blocking filter; Add-drop multiplexers; Channel spacing; Gratings; Insertion loss; Micromechanical devices; Micromirrors; Nonlinear filters; Optical add-drop multiplexers; Optical filters; Optical losses; Gratings; microelectromechanical devices; optical filter; optical switches;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.840346
