Fiber Focusers

Features Air spaced design 350 nm to 2100 nm Low wavefront error Various focusing elements No fluorescence Long working distances FC, FC/APC or pigtailed Stainless steel body

 

The Fiber Focuser is of a multi-element design that gives a tightly focused diffraction limited spot with long working distances. It consist of the FC10 Fiber Collimator plus a Focusing Cell. The Fiber Focuser is optimized for singlemode fiber but also works with large mode area (LMA) fibers and multimode fibers with different results.

We also manufacture other Fiber Focusers that start off with smaller beams and smaller apertures. These type of Fiber Focusers yield small spot with long depth of focus which are perfect for particle or cell analysis.

We also have larger beam Fiber Focuser that generate even smaller spot sizes

Oher options include optics such as linear, circular or radial polarizers, beam splittersor other optical elements. Diode lasers can also be supplied for a complete system.

Example

Using FC10 fiber collimator at 635nm with a Focusing Cell.
Requires FC10 Fiber Collimator + FL10 Focusing Cell.

Fiber Collimators	Beam size	Aperture size	Divergence
FC10-XXX/FC	~ 5.5 mm	11.9 mm	0.25 mrad
FC10-XXX/APC	~5.5 mm	11.9 mm	0.25 mrad
Focusing Cells	Effective Focal Length	Spot size (Singlemode Fiber)	Working Distance
FL10-XXX-11	11 mm	1/2 Mode Field Dia.	12 mm
FL10-XXX-32	32 mm	Mode Field Diameter	25 mm
FL10-XXX-50	50 mm	~ 8 mm	43 mm
FL10-XXX-100	100 mm	~16 mm	93 mm
FL10-XXX-150	150 mm	~23 mm	143 mm

 

Customization can also include other housing materials, mounting holes or slots, wavelength ranges and environmental concerns. We design, manufacture and assemble all parts in-house to give you the right focuser for the job.

Example of ~16um spot at 100mm diatnace

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