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AFC-FC-APC-1310 aspheric fiber optic collimator
1310 nm
FC/APC Receptacle
Collimation & Coupling Mode Schematicf = 4.5 mm
Collimator optical ray tracing schematic
Zolix Aspheric Collimator Series

AFC-FC-APC-1310

1310 nm FC/APC Aspheric Fiber Collimator

The AFC-FC-APC-1310 delivers diffraction-limited collimation for single-mode fiber systems operating in the 1260–1360 nm O-band. Pre-aligned at the factory to sub-0.5° beam pointing stability, it provides high transmission and superior wavefront flatness for fiber-to-chip coupling and free-space optical routing.

Wavelength1310 nm
Waist (2w₀)~0.81 mm
Divergence (θ)0.06°
Return Loss≥ 60 dB

Key Advantages

  • Diffraction-limited wavefront without spherical aberration
  • ≥ 60 dB return loss prevents parasitic optical feedback into 1310 nm laser diodes
  • Double-sided anti-reflection coating with >95% transmission
  • Stainless steel barrel with Ø11 mm outer envelope
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.

ParameterSpecificationClassification
Center Wavelength1310 nmOptical
Operating Wavelength Band1260 – 1360 nmOptical
Receptacle / ConnectorFC/APCMechanical
Endface Polish8° Angled Physical Contact (APC)Optical
Lens Focal Length (f)4.5 mmOptical
Lens Numerical Aperture (NA)0.45Optical
Beam Waist Diameter (2w₀)0.81 mmBeam Quality
Full-Angle Divergence (θ)0.06° (1.05 mrad)Beam Quality
Optical Return Loss≥ 60 dBOptical
AR Coating Transmission> 95%Optical
Housing DimensionsØ11.0 mm × 25.0 mmMechanical

Target Applications

  • O-Band 1310 nm optical transmission and transceiver manufacturing
  • Fiber-to-PIC (Photonic Integrated Circuit) coupling setups
  • Fiber sensing and distributed acoustic sensing (DAS/DTS)
  • OCT imaging and biomedical spectroscopy

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.

Open Interactive Sizing Calculator
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.

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, Green Boot)

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

Universal integration into cage & kinematic mounts