ZOLIX APFP-YZ Two-Axis Fiber Optic Alignment Stage

Overview

The ZOLIX APFP-YZ Two-Axis Fiber Optic Alignment Stage is an ultra-stable, precision mechanical positioning platform engineered for demanding optical coupling, fiber alignment, and free-space beam steering applications in research laboratories and photonics manufacturing environments. Built upon a fundamental understanding of thermal drift mitigation and mechanical hysteresis control, the stage employs a monolithic stainless-steel structural frame—selected for its low coefficient of thermal expansion (CTE ≈ 17.3 × 10⁻⁶ /°C) and high dimensional stability across ambient temperature fluctuations. Its core motion architecture utilizes crossed roller bearing guides, eliminating sliding friction and backlash while ensuring pure linear displacement with minimal parasitic rotation. This design directly addresses the primary failure modes observed in piezo-driven or flexure-based stages under sustained load or long-term static positioning—namely, creep, relaxation, and angular drift—making the APFP-YZ particularly suitable for applications requiring hours- to days-long positional hold without active feedback correction.

Key Features

• Stainless-steel main body and base plate for superior thermal stability and corrosion resistance, minimizing thermal-induced positional drift during extended operation.
• Crossed roller bearing guide system delivering high rigidity (> 25 N/µm in Y/Z), near-zero hysteresis (< 0.5 µm), and repeatable positioning accuracy within ±0.5 µm over full travel.
• Dual-axis manual micrometer-driven translation: Y-axis (vertical) range of 12 mm and Z-axis (axial/depth) range of 6 mm, each equipped with 10-µm resolution vernier scales and lockable knurled knobs.
• Optical axis height fixed at 79 mm above mounting surface—compatible with standard optical tables (e.g., 76.2 mm or 100 mm grid spacing) and commonly used kinematic mounts.
• Integrated dovetail (燕尾座) mounting interface on top plate, conforming to ISO 15387-1 specifications for interchangeability with commercial lens holders, fiber launchers, and collimator mounts.
• Maximum angular deviation (pitch + yaw) limited to < 100 µrad over full travel—critical for maintaining mode-field alignment in single-mode fiber coupling and interferometric setups.

Sample Compatibility & Compliance

The APFP-YZ accommodates optical components with footprints up to 60 mm × 60 mm and total mass ≤ 2.3 kg—including fiber collimators, micro-lenses, MEMS mirrors, photonic integrated circuit (PIC) carriers, and miniature spectrometer input slits. Its mechanical interface complies with common laboratory standards: M4 and M6 threaded holes (ISO metric) are distributed across the base for secure anchoring to optical tables or breadboards; the top dovetail conforms to DIN 6885-1 profile tolerances. While not certified to ISO/IEC 17025 or ANSI Z540, the stage’s dimensional repeatability and thermal performance align with GLP-compliant optical alignment workflows where traceable setup stability—not calibration certification—is the operational requirement.

Software & Data Management

As a manually operated, non-motorized stage, the APFP-YZ does not integrate with digital control systems or require firmware. However, its deterministic mechanical behavior enables seamless integration into automated alignment routines when paired with external position sensors (e.g., quadrant photodiodes, CCD-based beam profilers) and motorized actuators via third-party motion controllers (e.g., Thorlabs KDC101, Newport ESP300). All mechanical dimensions, mounting hole patterns, and tolerance callouts are provided in STEP and DXF formats upon request—supporting CAD-integrated optical design workflows in Zemax OpticStudio, CODE V, or FRED. No proprietary software, drivers, or cloud connectivity are involved.

Applications

• Precision coupling of single-mode fibers to lasers, modulators, or photonic chips—where sub-microradian angular stability directly impacts insertion loss and return loss.
• Alignment of free-space optical interconnects in quantum optics experiments, including cavity ring-down spectroscopy and atomic vapor cell interfacing.
• Positioning of fiber-coupled detectors or sources in OEM spectroscopic modules requiring long-term mechanical integrity without power dependency.
• Integration into multi-axis alignment stacks (e.g., XYZ + tip/tilt) for building custom optomechanical assemblies compliant with MIL-STD-810G vibration and thermal shock profiles.
• Teaching platforms in university photonics labs—demonstrating fundamentals of mechanical metrology, Abbe error, and thermal drift compensation in open-loop systems.

FAQ

Is the APFP-YZ compatible with vacuum environments?
Yes—when specified with vacuum-compatible lubricants (e.g., NSK AFE grease) and optional stainless-steel fasteners, the stage operates reliably at pressures down to 10⁻⁶ mbar. Standard units are rated for ambient air only.
Can I mount it directly onto a 1-inch post holder?
No—the base lacks integrated post-mounting threads. A separate adapter plate (e.g., ZOLIX AP-MB-79) is required to raise the optical axis to 79 mm and provide 1/4″-20 or M6 threading.
What is the maximum recommended torque for the micrometer knobs?
Do not exceed 0.3 N·m. Over-torquing may deform the brass nut or damage the lead screw pitch, degrading repeatability.
Does ZOLIX provide calibration certificates for individual units?
No—calibration is not performed at the factory. Users requiring traceable verification may perform in-house laser interferometric measurement per ISO 230-2 Annex B protocols.
Is there a motorized version available?
ZOLIX offers the APFP-YZM series with integrated stepper motors and RS-485/Modbus RTU interface, sold separately with dedicated controller firmware.