AFC-FC-APC-1550

Name: 1550 nm FC/APC Aspheric Fiber Collimator
Brand: Zolix
Availability: InStock

1550 nm FC/APC Aspheric Fiber Collimator

The AFC-FC-APC-1550 is an engineered aspheric fiber collimator designed for high-performance single-mode laser delivery in the 1520–1620 nm optical telecommunications window. Incorporating a molded precision aspheric glass singlet, it eliminates spherical aberration completely to transform divergent fiber emission into a diffraction-limited collimated beam (2w₀ = 0.85 mm). The factory-aligned 8° FC/APC interface ensures backreflected light is guided harmlessly into the cladding, yielding ≥60 dB optical return loss.

Wavelength1550 nm

Waist (2w₀)~0.85 mm

Divergence (θ)0.07°

Return Loss≥ 60 dB

Key Advantages

Diffraction-limited TEM₀₀ Gaussian beam output (M² < 1.1)
≥ 60 dB return loss with 8° angled physical contact (FC/APC)
High damage threshold broadband dual-sided AR coating (>95% transmission)
Pre-aligned pointing accuracy ≤ 0.5° for instant drop-in integration
Compact Ø11 mm stainless housing compatible with standard optical cage and kinematic mounts

Contact Optics Specialist

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	1550 nm	Optical
Operating Wavelength Band	1520 – 1620 nm	Optical
Receptacle / Connector	FC/APC (Narrow & Wide Key compatible)	Mechanical
Endface Polish	8° Angled Physical Contact (APC)	Optical
Lens Focal Length (f)	4.5 mm	Optical
Lens Numerical Aperture (NA)	0.45	Optical
Clear Aperture (CA)	Ø4.0 mm	Optical
Beam Waist Diameter (2w₀)	0.85 mm (1/e²)	Beam Quality
Full-Angle Divergence (θ)	0.07° (1.22 mrad)	Beam Quality
Beam Quality Factor	M² ≈ 1.05	Beam Quality
Pointing Offset	≤ 0.5°	Mechanical
Optical Return Loss	≥ 60 dB	Optical
AR Coating Transmission	> 95% (Broadband dual-sided)	Optical
Outer Diameter	Ø11.0 mm	Mechanical
Overall Barrel Length	25.0 mm	Mechanical
Housing Material	SUS303 Stainless Steel	Mechanical
Operating Temperature	-20°C to +80°C	Environmental

Target Applications

C & L Band telecommunication systems and DWDM multiplexing
Free-space optical communications and lidar transceiver setups
Narrow-linewidth DFB laser and fiber laser beam collimation
Interferometry, OCT (Optical Coherence Tomography), and optical frequency combs
Multi-axis fiber-to-space and space-to-fiber coupling stations

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.

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, Green Boot)

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

Universal integration into cage & kinematic mounts