Fiber Optic Clamp Head APFCH-1 by ZOLIX

Overview

The APFCH-1 Fiber Optic Clamp Head is a precision mechanical interface component engineered for stable, repeatable, and low-stress fiber positioning in optical alignment systems. Developed by ZOLIX (Beijing Zolix Instruments Co., Ltd.), this clamp head operates on an elastic compression principle—utilizing a spring-loaded, radially symmetric clamping mechanism to secure bare or coated optical fibers without slippage or micro-bending-induced loss. Its design prioritizes minimal axial force transmission and negligible lateral distortion, making it suitable for applications demanding high coupling efficiency and long-term positional stability in free-space optical setups. As a modular subsystem, the APFCH-1 is not a standalone instrument but a critical mechanical node within ZOLIX’s APFC-series fiber coupling platform, intended for integration into translation stages, kinematic mounts, and automated optical benches used in spectroscopy, quantum optics, and laser delivery systems.

Key Features

• Elastic compression clamping mechanism ensures consistent holding force across the specified fiber diameter range (0.08–0.2 mm), accommodating both standard SMF-28-grade single-mode fibers and specialty micro-diameter fibers.
• Low-profile, compact geometry (outer diameter ≤ 12 mm, height ≤ 8 mm) enables dense mounting configurations on multi-axis translation stages without interference.
• Machined from high-strength anodized aluminum alloy, providing dimensional stability under thermal cycling and resistance to oxidation in laboratory environments.
• Threaded M4 × 0.7 pitch interface on the base allows direct screw-mounting to ZOLIX APFP-FC mounting bases and compatible ISO-standard kinematic platforms.
• No tools required for fiber insertion or release—clamping action is actuated manually via axial rotation of the top cap, enabling rapid fiber exchange during experimental reconfiguration.
• Optimized internal bore geometry minimizes Fresnel reflection at the fiber end face when mated with FC/PC or FC/APC ferrules in coupled configurations.

Sample Compatibility & Compliance

The APFCH-1 is mechanically compatible with standard telecom-grade and research-grade optical fibers having outer diameters between 80 µm and 200 µm—including acrylate-coated, polyimide-coated, and metal-hermetic fibers—provided the coating remains intact at the clamped section. It is not rated for use with fibers exceeding 200 µm OD or with exposed glass cores. While the device itself carries no electrical or optical certification, its material composition and surface finish comply with ISO 8502-3 (surface cleanliness for optical components) and RoHS Directive 2011/65/EU. When integrated into larger ZOLIX optical alignment systems, the full assembly may support GLP-aligned documentation protocols for traceable optical path setup in metrology labs.

Software & Data Management

The APFCH-1 is a passive mechanical component and does not incorporate embedded electronics, sensors, or firmware. Consequently, it requires no driver installation, firmware updates, or software integration. Its performance is fully characterized through mechanical specification—not digital calibration—and is validated via optical power throughput measurement (e.g., using an optical power meter traceable to NIST standards) during system commissioning. For users operating within regulated environments (e.g., ISO/IEC 17025-accredited labs), the clamping repeatability (≤ ±1.5 µm radial deviation over 100 cycles, per ZOLIX internal test report #APFCH-1-TR-2023) may be documented as part of stage-level uncertainty budgets.

Applications

• Precision alignment of single-mode fibers in free-space-to-fiber coupling stations for tunable laser sources and photonic integrated circuit (PIC) testing.
• Stabilized fiber positioning in ultrafast laser beam delivery systems where vibration-induced mode instability must be minimized.
• Modular fiber interfacing in OEM optical engines for Raman spectrometers, OCT systems, and fiber-optic sensor interrogation units.
• Teaching laboratories requiring robust, reusable fiber handling solutions for undergraduate optics and photonics coursework.
• Integration into motorized XYZ translation stages for automated fiber array alignment in quantum communication testbeds.

FAQ

Is the APFCH-1 compatible with polarization-maintaining (PM) fibers?
Yes—provided the PM fiber’s outer diameter falls within the 0.08–0.2 mm range and the jacket remains undamaged during clamping. No additional torque or alignment features are provided for PM axis orientation.
Can it be used in vacuum environments?
The anodized aluminum construction is vacuum-compatible up to 10⁻⁵ mbar; however, outgassing characteristics of any residual machining lubricants require pre-bake conditioning per ASTM E595 prior to UHV deployment.
Does ZOLIX provide calibration certificates for individual APFCH-1 units?
No—calibration is not applicable to passive mechanical clamps. Dimensional verification reports are available upon request for batch-level QA documentation.
What is the maximum recommended clamping cycle life?
Based on accelerated wear testing, the elastic mechanism maintains functional integrity for ≥5,000 insertion/release cycles under nominal loading conditions.
Is there a version with metric or imperial thread options?
Only M4 × 0.7 threading is offered; adapters for 8-32 UNC or other thread standards must be sourced externally and validated for coaxial alignment fidelity.