Devices for dispersion compensation, beam displacement, and...

Optical waveguides – Polarization without modulation

Reexamination Certificate

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C398S159000, C359S484010

Reexamination Certificate

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07840100

ABSTRACT:
A method of laterally displacing at least a component of a light beam, the method comprising: a) directing the beam to enter a block of birefringent material at a first location, and at least the component of the beam to pass through the block on a first path to an exit location; and b) changing a polarization of the component of the beam after it has passed through the block, and directing it to pass back through the block from the previous exit location to a next exit location, following a next path oriented at changed angle due to its changed polarization state, at least one time; the component of the beam thereby being laterally displaced from the first location, when it exits the block a last time.

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“Gires-Tournois etalon,” http://en.wikipedia.org/wiki/Gires-Tournois—etalon, downloaded Feb. 14, 2007.
“Dispersion Compensation” in the online Encyclopedia of Laser Physics and Technology, http://www.rp-photonics.com/dispersion—compensation.html, last updated Apr. 16, 2009.

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