Koncent Communication Inc., a PHOTOP company and leading fiber optical component manufacturer and provider, today announced that it had been issued a US patent with PUB. APP. NO. 20020159151 for optical interleaver using mach-zehnder interferometry. The patent generally applies to optical communication systems.

The object of the present invention is to provide an improved configuration for manufacturing a compact and low-dispersion interleaver to achieve excellent wide, flat passbands, high channel isolation, low PDL and PMD, while maintaining Koncent's competitive price.

Those interleavers are ideal for OADM, DWDM system, subsystem, system upgrading, bi-directional network and comb filter etc.