Title :
Experimental demonstration of thin-film dispersion compensation for 50-GHz filters
Author :
Tilsch, M. ; Hulse, C.A. ; Zernik, F.K. ; Modavis, R.A. ; Addiego, C.J. ; Sargent, R.B. ; Brien, N. A O ; Pinkney, H. ; Turukhin, A.V.
Author_Institution :
JDS Uniphase, Santa Rosa, CA, USA
Abstract :
Dispersion management is critical for next-generation high-bandwidth-utilization fiber-optical networks. Square-top thin-film bandpass filters for 50-GHz dense wavelength-division multiplexing inherently have high chromatic dispersion (CD) in transmission. The imparted dispersion power penalty on the network is undesirable. However, a second thin-film filter, operating in reflection, can be designed to compensate the CD of the bandpass filter. In this paper we demonstrate experimentally the reduction of the intrinsic CD of a 50-GHz thin-film coupler from /spl plusmn/170 ps/nm to /spl plusmn/50 ps/nm over a 30-GHz passband, through the use of such a cascaded thin-film compensator. Network simulations based on filter performance confirm the reduced dispersion power penalty of the cascade over the individual filter.
Keywords :
band-pass filters; compensation; microwave photonics; optical communication equipment; optical fibre networks; optical waveguide filters; wavelength division multiplexing; 30 GHz; 50 GHz; cascaded thin-film compensator; dense wavelength-division multiplexing; dispersion management; dispersion power penalty; filter performance; high chromatic dispersion; network simulations; next-generation high-bandwidth-utilization fiber-optical networks; reduced dispersion power penalty; submillimetre wave filters; thin-film bandpass filters; thin-film coupler; thin-film dispersion compensation; thin-film filter; Band pass filters; Chromatic dispersion; Next generation networking; Optical fiber dispersion; Optical fiber filters; Optical reflection; Passband; Performance loss; Transistors; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.805747
