G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 27/10 (2006.01) G02B 5/20 (2006.01) G02B 6/34 (2006.01) G02B 27/28 (2006.01) H04J 14/02 (2006.01) H04J 14/06 (2006.01) G02B 6/42 (2006.01)
Patent
CA 2354361
A conventional interleaver, based on a stack of waveplates, relies on the orientation and the birefringence of the waveplates to differentiate the polarizations of one set of channels from another, so that the one set of channels can be separated from the other. The present invention relates to a virtual waveplate that is used to replace a birefringent waveplate. A virtual waveplate imposes a phase delay between the extraordinary ray and the ordinary ray by separating one from the other and differentiating the actual path lengths taken thereby, before recombining them. An interleaver constructed with the virtual waveplates of the present invention can be substantially a-thermal and potentially chromatic dispersion free.
Jds Uniphase Inc.
Teitelbaum & Maclean
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