G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/28 (2006.01) H04B 10/18 (2006.01) H04J 14/02 (2006.01)
Patent
CA 2389937
A method and device is disclosed for relaying a narrow diameter collimated optical beam carrying optical communication signal channels between a multilayer interference filters and another reflective surface avoiding signal loss by routing the optical beam to compensate for beam broadening caused by the multilayer interference filter. The method and device are particularly applicable to dispersion compensating filters, especially those wherein one filter is tunable, in that a controllable amount of dispersion is introduced to offset or compensate dispersion. Preferably one of the filters is a tunable periodic device in the form of a multi-cavity etalon structure. In a preferred embodiment of the filters can be designed to provide various controllable but different constant amounts of dispersion.
Colbourne Paul
Lamont Michael R.e.
Mclaughlin Sheldon
Moss David
Randall Geoff
Jds Uniphase Inc.
Teitelbaum & Maclean
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