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633 nm

FC/PC Receptacle

Conceptual optical schematic; not a product photograph or model-specific drawing.

Collimation & Coupling Mode Schematicf = 4.5 mm

Collimator optical ray tracing schematic

Aspheric Collimator Series

AFC-FC-PC-633

633 nm FC/PC Aspheric Fiber Collimator

The AFC-FC-PC-633 is a workhorse visible collimator widely used on optical tables for laser beam delivery, optical cage assembly, and positioning measurement.

Wavelength633 nm

Waist (2w₀)~0.64 mm

Divergence (θ)0.032°

Return Loss≥ 45 dB

Key Advantages

Standard FC/PC connector compatibility
Visible AR coating >95%
Precision stainless housing

Contact Optics Specialist

FC/PC Mating Note: Standard 0° flat contact (black/blue boot). Never mate with 8° FC/APC connectors, as the resulting angular wedge creates high loss (>10 dB) and optical damage.

Detailed Technical Specifications

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

Parameter	Specification	Classification
Center Wavelength	633 nm	Optical
Receptacle	FC/PC	Mechanical
Focal Length (f)	4.5 mm	Optical
Beam Waist (2w₀)	0.64 mm	Beam Quality
Divergence (θ)	0.032° (0.56 mrad)	Beam Quality
Return Loss	≥ 45 dB	Optical
Transmission	> 95%	Optical

Target Applications

Optical table laser delivery
Interferometry
Optical component characterization

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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Mechanical Layout & 3D Models