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2012/01
Photonics West 2012


Fiber-optic Rotary Joint

Fiber-optic rotary joint (old name commutator) allows for free rotation of fiber while maintaining excellent coupling efficiency. The device consists of two collimators mounted on high quality ball bearings that ensure good coupling efficiency while optical fiber is rotating.

Our introductory version is designed for use in visible range with multimode fiber having up to 200 μm core diameter and NA up to 0.37. The joint diameter is 17 mm while the length without FC connectors is 25 mm. The weight is about 10 grams. Typical insertion loss is less than 1.0 dB with less than 0.2 dB variation during rotation.
These joints were specifically developped for optogenetics applications to facilitate delivery of the light signal through optical fibers to moving objects. However, any applications that requires optical fiber cable connecting to rotating object can take advantage of this product.

November 2011 Optogenetics catalog

Drawings:
FRJ_1x1_FC-FC
FRJ_1x2i_FC-2FC
FRJ_1x2i_FC-2sma

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