Fiberoptic reconfigurable devices with beam shaping for...

Optical waveguides – With optical coupler

Reexamination Certificate

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C385S033000, C385S034000, C385S035000, C385S093000, C359S245000, C359S251000, C359S252000, C359S254000, C359S255000, C359S256000, C359S257000, C359S258000, C359S315000, C359S319000, C359S322000, C359S323000

Reexamination Certificate

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07403677

ABSTRACT:
An apparatus and method to operate on a light beam by using a lens that collimates the light beam to a collimated beam with at least one cross-sectional dimension less than a critical dimension of 400 μm or less over a working range WR. The apparatus has a bulk electro-optic material of small thickness τ, e.g., less than 300 μm positioned within working range WR and the collimated beam traverses it along its path. The apparatus has a voltage source for applying a low operating or drive voltage Vdrive, e.g. less than 400 V to the bulk electro-optic material for performing an operation on the collimated beam. The lens for collimating the light beam is a free-space collimator such as a graded index (GRIN) lens or preferably a C-lens. The apparatus is a versatile and scalable platform that can be employed in building various electro-optic devices.

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