The number of channels of an optical communication system is increasing rapidly. In this paper, the demonstration of a 130-channel demultiplexer based on the cascaded volume holographic gratings is presented. Those gratings are recorded separately in 100-μm thickness photopolymer films, which attached on both sides of a glass substrate. They have different grating periods, slant angles, and center wavelengths. By ultilizing this configuration, the operating wavelength range of the optical demultiplexer could be expanded, and therefore, the number of channels of the holographic demultiplexer is increased. As a result of the experiment, a 0.4-nm-spaced demultiplexer with the channel uniformity of 3.5 dB, the 3dB-bandwidth of 0.12 nm, and the channel crosstalk of -20 dB is experimentally achieved.

Date Published: 13 September 2006
PDF: 8 pages
Proc. SPIE 6335, Organic Holographic Materials and Applications IV, 63350A (13 September 2006); doi: 10.1117/12.680237

Published in SPIE Proceedings Vol. 6335:
Organic Holographic Materials and Applications IV
Susanna Orlic; Klaus Meerholz, Editor(s)