Patent ID: 7257291
Filing Date: 2007-08-14
Classification: G02B

Abstract:
1. An optical filter comprising: a first Mach-Zehnder optical structure including a second Mach-Zehnder optical structure including CHARACTERIZED IN THAT: one of the output ports of the first Mach-Zehnder structure is optically connected to an input port of the second Mach-Zehnder structure; each arm of both Mach-Zehnder optical structures includes one or more resonators optically coupled thereto; and upon application of an input optical signal to one of the input ports of the first Mach-Zehnder structure, a THROUGH output signal is available at one of the output ports of the second Mach-Zehnder structure and a DROP output signal is available at the other output port of the second Mach-Zehnder structure.