Related Experiment Video
Updated: Jul 4, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
Published on: February 4, 2018
Tunable chromatic dispersion and dispersion slope compensator using a planar lightwave circuit lattice-form filter
K Takiguchi1, H Takahashi, T Shibata
1NTT Photonics Laboratories, NTT Corporation, Atsugi, Kanagawa, Japan. taki@aecl.ntt.co.jp
Abstract:
A tunable chromatic dispersion and dispersion slope compensator is proposed that has a single lattice-form filter configuration. Wavelength dependence is intentionally added to its tunable couplers, which produces dispersion slope compensation in addition to the dispersion compensation. Dispersion tunability of +/- 500 ps/nm and a slope of -4.9 ps/nm(2) over 40 GHz are successfully demonstrated, thus meeting the requirement for 40 Gbits/s differential quadrature phase shift keying transmission with an 80 km long nonzero dispersion-shifted fiber.
Related Concept Videos
Time and frequency -Domain Interpretation of Phase-lag Control
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any finite,...
Bewley Lattice Diagram
Phase-lead and Phase-lag Controllers

