AFC-FC-APC-850

Name: 850 nm FC/APC Aspheric Fiber Collimator
Brand: Zolix
Availability: InStock

850 nm FC/APC Aspheric Fiber Collimator

The AFC-FC-APC-850 provides tight beam collimation for near-infrared 850 nm laser diodes and single-mode fibers. Commonly deployed in OCT ophthalmic scanners and quantum optics experiments.

Wavelength850 nm

Waist (2w₀)~0.73 mm

Divergence (θ)0.04°

Return Loss≥ 60 dB

Key Advantages

Optimized for 850 nm VCSEL and NIR single-mode fiber emission
Ultra-low divergence of ~0.04°
High backreflection suppression (≥ 60 dB)

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FC/APC Connector Note: Uses an 8° angled physical contact interface (green strain-relief boot). Connect only with APC fiber jumpers to ensure ≥60 dB return loss and avoid facet damage.

Detailed Technical Specifications

Every Zolix collimator undergoes interferometric wavefront qualification and precision angular alignment before delivery.

Parameter	Specification	Classification
Center Wavelength	850 nm	Optical
Operating Wavelength Band	820 – 880 nm	Optical
Receptacle / Connector	FC/APC	Mechanical
Lens Focal Length (f)	4.5 mm	Optical
Lens Numerical Aperture (NA)	0.45	Optical
Beam Waist Diameter (2w₀)	0.73 mm	Beam Quality
Full-Angle Divergence (θ)	0.04° (0.70 mrad)	Beam Quality
Optical Return Loss	≥ 60 dB	Optical
Transmission	> 95%	Optical

Target Applications

Retinal OCT imaging
Short-range optical datacom
Atomic physics and quantum optics

Engineering Sizing & NA Verification

Need to calculate exact beam diameter at 5 meters or verify numerical aperture matching between your fiber output and downstream clear apertures? Use our interactive calculation lab.

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Zolix Mechanical Layout & 3D Models

Mechanical Dimensions & CAD Integration

Standard Zolix Ø11.0 mm precision stainless barrel format for drop-in alignment into standard optical cage systems, mirror mounts, and V-groove clamps.

Request Zolix 3D STEP File Request PDF Drawing

Outer Barrel EnvelopeØ 11.0 mm × 25.0 mm

Zolix precision ground SUS303 stainless steel

Receptacle StandardFC/APC (Wide & Narrow Key)

8° Angled Physical Contact (APC)

Mounting System CompatibilityStandard Ø11.0 mm V-Clamp / Collar

Universal integration into cage & kinematic mounts