Bristol 228B High Accuracy Optical Wavelength Meter

The Bristol 228B is an optical wavelength meter designed for the precise characterization of WDM lasers, suitable for R&D scientists and manufacturing engineers. It utilizes a Michelson interferometer design for accurate wavelength measurements and offers continuous calibration with a built-in wavelength standard for maintained accuracy over time. The unit is built with a rugged design, intended for demanding manufacturing environments.

### Technical Specifications

* **Model:** Bristol 228B
* **Product Type:** Optical Wavelength Meter
* **Optical Signal Type:** CW only
* **Wavelength Measurement Range:** 1250 nm to 1650 nm, or 700 nm to 1650 nm
* **Wavelength Absolute Accuracy:**
* ± 1.0 pm (defined as measurement uncertainty with a confidence level of ≥ 99.7%)
* ± 0.65 parts per million (± 1.0 pm at 1550 nm)
* **Wavelength Reference:** Standard HeNe laser
* **Repeatability:** Supports a confidence level of ≥ 99.7%
* **Traceability:** Traceable to NIST standards (SRM 2517a)
* **Optical Power Measurement:**
* Accuracy: ± 0.5 dB
* Simultaneous measurement of total optical power
* **Measurement Rate:** 0.1 seconds per measurement
* **Input Power Sensitivity:** As low as -30 dBm (1 µW)
* **Maximum Input Level:** +18 dBm
* **Optical Input Connector:** FC (UPC or APC) fiber-optic connector
* **Fiber Type:** 9/125 µm Single-Mode fiber
* **Linearity:** ± 0.3 dB
* **Measurement Display:** Front panel display shows measured wavelength and power, maximum and minimum values, and total drift
* **Interfaces:** SCPI using USB, Ethernet, or GPIB
* **Construction:** Rugged design for manufacturing environments
* **Power Requirements:** 90 – 264 VAC, 47 – 63 Hz, 80 VA max.

### Why Choose Aumictech for Bristol 228B?
At Aumictech, we specialize in supplying high-end optical wavelength measurement equipment. Whether you need precise wavelength characterization for WDM lasers, reliable performance in demanding industrial environments, or accurate traceability to NIST standards, our team ensures the Bristol 228B delivers maximum performance for your application.