The new 328 Series Wavelength Meters are designed for single wavelength measurement and utilize FFT processing, similar to the 428 Series Multi-Wavelength Meters.
This allows the 328 Series to measure CW or modulated tunable DWDM lasers, DFB lasers, and VCSELs. The 328 Series is designed for the telecom market. It can also be used to calibrate passive DWDM component test equipment such as optical spectrum analyzers.

Features:

• Spectral Range: 1270 - 1650 nm (236 - 182 THz)
• Sensitivity: -40 dBm (1270 - 1600 nm), -30 dBm (1600 - 1650 nm)
• Absolute optical wavelength measured to an accuracy as high as ± 0.3 pm
• Continuous calibration with a built-in wavelength standard
• Measurement confidence level of 3σ Simultaneous measurement of total optical power
• Operation with CW and modulated signals

The new 228 Series Optical Wavelength Meter from Bristol Instruments combines high accuracy and exceptional repeatability to achieve the most meaningful results for DWDM test applications.
The model 228 is the ideal instrument for precise wavelength characterization of tunable DWDM lasers, DFB lasers, and VCSELs. It can also be used to calibrate passive DWDM component test equipment such as optical spectrum analyzers.

Features:

• Spectral Range: 1250 - 1650 nm (240 - 182 THz)
• Sensitivity: -30 dBm (1 W)
• Absolute optical wavelength measured to the highest accuracy of ± 0.3 pm
• Continuous calibration with a built-in wavelength standard
• Optical wavelength measured to a confidence level of 3σ (≥ 99.6%) Simultaneous measurement of total optical power
• Measurement time as short as 0.1 s

Model 621B-MIR Laser Wavelength Meter is the only way to accurately measure the absolute wavelength of CW lasers that operate in the mid-infrared (4-11 μm).

• Absolute wavelength accuracy of ± 1 part per million.
• Built-in wavelength standard for continuous calibration.
• Operates from 4.0 to 11.0 μm.
• Easy to integrate into experiment for automatic wavelength reporting and control.

The 428 Series Multi-Wavelength Meter simultaneously measures wavelength, power, and optical signal-to-noise ratio (OSNR) to greater than 40 dB in order to fully characterize DWDM components and DWDM transmission systems.

• Measures wavelength and power of up to 250 optical signals
• Spectral Range: 1270 - 1650 nm (182 - 236 THz)
• Optical wavelength measured to an accuracy as high as ± 0.3 pm
• Continuous calibration with a built-in wavelength standard
• Wavelength accuracy guaranteed to a confidence level of 3δ (≥ 99.6%)
• Automatic calculation of OSNR and channel spacing

Low Cost Laser Wavelength Meter - 521 Serie: is a compact system that provides accurate laser wavelength measurement, and is offered at a very attractive price.

• Measures CW laser wavelength to an accuracy as high as ± 0.005 nm.
• Built-in reference for continuous calibration
• Measurement rate as high as 10 Hz.
• Operation available from 400nm to 1100nm or 500nm to 1700nm
• Convenient, pre-aligned optical fiber input (GHz)
• Input power requirement as low as 5 uW.

High-Accuracy Laser Wavelength Meter - The model 621A is offered for the most demanding experiments, measuring absolute wavelength to the highest accuracy of ± 0.2 ppm.
Two versions of the 621 series are available. For experiments that are less exacting, the model 621B is a lower-priced alternative.

• Accuracy ± 0.2 ppm for 621A Model
• Accuracy ± 0.75 ppm (± 1 ppm for MIR and XIR)for 621B Model
• Operation available from 375 nm to 12 μm

The model 821B pulsed laser wavelengthmeter measures absolute wavelength to an accuracy of ± 0.02 cm-1 over the range of 350-1100 nm or 630-1700 nm.
This system provides real-time laser wavelength information with an accuracy that is guaranteed by automatic calibration with a built-in wavelength standard. The result is the reliable accuracy that is required for the most demanding applications.

• Operates with pulsed and CW lasers, and OPOs.
• Absolute wavelength accuracy of ± 0.02 cm-1.
• Operation from 350 to 1100 nm or 630 to 1700 nm.
• Measurement rate of 200 Hz provides instantaneous wavelength information.

The 721 series provides the most complete analysis because it operates as both a high-accuracy laser wavelength meter and as a high-resolution laser spectrum analyzer.
Wavelength measurement and spectral analysis with one instrument.

Features:
• Absolute wavelength accuracy as high as ± 0.2 parts per million.
• Spectral resolution as high as 2 GHz.
• Operation available from 375 nm to 5.0 μm
• Operation with CW and high-repetition rate pulsed lasers (pulse width >50 ns, repetition rate >50 kHz)
• Input power requirement as low as 10 μmW

721		721B-MIR	721B-XIR
Visible 375-420nm 425-630nm 635-1100nm	NIR 500-630nm 635-1260nm 1270-1680nm	4µm-6.3µm	2µm-12µm
IR - 3.5µm-5µm