At Aumictech, we offer professional, NIST-traceable repair and calibration services for the Bristol Instruments 671B Laser Wavelength Meter, a staple in high-precision photonics and laser development labs. Our specialized team understands the critical role this instrument plays in delivering sub-picometer wavelength accuracy, and we’re equipped to bring your unit back to optimal condition — whether it’s out of spec, intermittently failing, or completely non-functional.
When accuracy, speed, and traceability matter, trust Aumictech to restore your 671B to factory-grade performance with full documentation and expert support.
About the Bristol Instruments 671B Wavelength Meter
The 671B is designed for accurate, real-time measurement of CW laser wavelengths, and is widely used in industries where laser characterization is essential. Its popularity comes from its:
- Wavelength measurement accuracy of ±0.2 ppm
- Broad operating range: 1000 nm – 1700 nm
- Fast measurement speed: Up to 10 Hz (or higher in customized models)
- High repeatability and low uncertainty
- Fiber-coupled input for stable, alignment-free measurements
Used in both R&D and production environments, the 671B is critical for verifying tunable lasers, telecom components (DWDM), diode lasers, and scientific instruments. But like any precision instrument, it requires periodic calibration and occasional repair to maintain performance over time.
Common Issues We Repair on the 671B
Our experienced engineers at Aumictech have encountered and resolved a wide range of issues with Bristol 671B wavelength meters. Some of the most common include:
🔧 Wavelength Drift or Inaccuracy
- Often due to interferometer misalignment, aging optical components, or environmental effects
- We realign and calibrate the interferometer using gas cell references and laser sources
🔧 Failing Internal HeNe Reference Laser
- A weak or unstable HeNe laser can cause serious measurement instability
- We replace, align, and test a new reference laser to meet the required accuracy
🔧 Signal Dropouts or Measurement Failures
- Typically caused by degraded fiber input couplers, photodiodes, or internal connectors
- We replace damaged components and clean fiber inputs and collimators
🔧 Fan or Power Supply Failures
- Can cause thermal instability or power issues
- We replace faulty fans, power bricks, and regulators for long-term reliability
🔧 No PC Communication or GUI Errors
- Interface issues may stem from outdated firmware, corrupted memory, or board damage
- We reflash firmware, repair communication boards, and test USB/Ethernet connectivity
🔧 Internal Noise and Poor Stability
- Excessive electronic or optical noise may be caused by aging analog circuitry
- We replace or upgrade affected boards and recalibrate to minimize noise
After each repair, we fully calibrate and test the unit across multiple known laser lines, and deliver it back with complete performance documentation.
Full NIST-Traceable Calibration for the 671B
Calibration of the Bristol 671B is essential for ensuring compliance, measurement traceability, and data reliability. Aumictech provides NIST-traceable calibration services that include:
- Verification of absolute wavelength accuracy at key points (e.g., 1310 nm, 1550 nm)
- Stability testing under continuous and pulsed input conditions
- Spectral resolution and repeatability analysis
- Environmental stabilization and thermal drift compensation
- Comprehensive calibration certificate including:
- Pre- and post-calibration data
- Environmental conditions
- Reference standards used
- Traceability documentation
- Calibration seals and tracking ID
We offer calibration as a stand-alone service, or bundled with repair for full-service restoration.
Supported Configurations of the 671B
We support all variations and serial number ranges of the Bristol 671B, including custom OEM variants or systems with integrated automation. Supported configurations include:
- Standard 671B with single-mode fiber input
- High-speed variants with fast acquisition
- Rack-mounted or benchtop configurations
- Units integrated into laser manufacturing platforms
- Customized I/O options for remote monitoring and feedback
If your model is slightly customized or not explicitly listed, just email sales@aumictech.com and we’ll confirm support.
What’s Included in Our Service
When you send your 671B to Aumictech, you get:
- ✔️ Detailed diagnostics report
- ✔️ Component-level repair (not just module replacement)
- ✔️ Internal optics realignment
- ✔️ Cleaning and testing of optical paths and inputs
- ✔️ Reference laser check or replacement
- ✔️ Firmware and interface testing
- ✔️ NIST-traceable calibration
- ✔️ Detailed report and certificate of service
- ✔️ Optional maintenance recommendations
We don’t just fix the problem — we ensure the unit is accurate, stable, and production-ready.
Industries and Applications We Serve
Aumictech supports a wide range of industries that rely on 671B wavelength meters for their high-resolution optical testing:
- Telecom (DWDM, C-band/L-band component testing)
- Fiber optic transceiver manufacturing
- Tunable laser design and validation
- Quantum optics and fundamental physics research
- Semiconductor laser characterization
- University photonics and spectroscopy labs
- National standards and metrology institutes
Whether you’re in product R&D, laser QC, or compliance testing, we’ll ensure your wavelength meter delivers precision measurements you can trust.
Turnaround Time & Shipping Options
- 🕒 Standard turnaround: 5–10 business days
- ⚡ Rush calibration & repair: 1–3 business days (availability-based)
- 🌍 International and domestic support available
- 📦 Secure packaging, insured return shipping, and full documentation
- 🎯 Annual recalibration reminders available for lab tracking
We offer flexible return logistics and handle units from single-user labs to multinational photonics manufacturers.
How to Request Service
Getting started is simple:
- Email us at sales@aumictech.com with:
- Unit model (e.g., Bristol 671B)
- Description of the issue or request for calibration
- Serial number or photos (if available)
- Receive a detailed quote and RMA instructions
- Ship your unit to Aumictech for repair and/or calibration
- Receive your restored instrument with full documentation
We’ll keep you updated throughout the process — from evaluation to shipping.
Why Choose Aumictech?
Here’s why customers worldwide trust us with their wavelength meters:
- ✅ Expertise in Bristol Instruments systems
- ✅ Proprietary test benches for accurate optical calibration
- ✅ Component-level diagnostics — not just board swaps
- ✅ Faster turnaround than OEM services
- ✅ Affordable pricing and bulk service discounts
- ✅ Support for legacy and custom-configured units
- ✅ Engineering support and post-service consultation
We are committed to helping your lab or production line maintain accuracy, minimize downtime, and control cost.
Let Aumictech Bring Your 671B Back to Life
If your Bristol 671B is failing to deliver the performance you expect, don’t settle for unreliable results or costly replacement. At Aumictech, we offer precision repair, expert diagnostics, and certified calibration — all under one roof.
📧 Reach out to us today at sales@aumictech.com to get a free evaluation or service quote.
Let us restore your confidence in every wavelength measurement.
