High-Wavelength Resolution and Instantaneous Spectrometric Measurement at Wavelengths from 950 to 1700 nm
The SPG-V500 is an optical spectrum analyzer that measures spectra at multiple wavelengths simultaneously and in real time. With multimode fiber input, it reduces optical alignment effort and helps streamline laser measurements in the 950–1700 nm range.

Features
- Assess Spectral Behavior in the Blink of an Eye Using Simultaneous Multi-Wavelength Measurements
Using an array sensor, the SPG-V500 simultaneously acquires spectra at multiple wavelengths. Spectra can be acquired at intervals as short as the minimum integration time of 21 μs, enabling detection of spectral behavior such as mode hopping. It also supports pulsed laser measurement.
- Save time with easy setup, high resolution, and high-speed measurement
This instrument achieves a wavelength resolution of 50 pm or better not only for single-mode fibers but also for multimode fibers. Measurement is performed simply by orienting the optical fiber toward the light source, eliminating the need for precise optical alignment. Spectral measurements are instantaneous, reducing the total measurement time.
- Fast High Dynamic Range Measurements
With the optional high dynamic range measurement mode*, side-mode suppression ratio (SMSR) up to 60 dB can be measured in under one second.
- *Optional feature
Example: measurement of a 1550 nm DFB laser
(Nominal wavelength: 1547 nm, Measurement wavelength range: approx. 14.3 nm)
| ・ | SPG for Laser — software optimized for laser measurements Provides a variety of functions for visualizing spectral behavior. |
| ・ | Controllable via User Software DLLs (C#) and sample software (C#, Python, and LabVIEW) are provided to support integration with other instruments. |
Typical Applications
The SPG-V500 combines high-resolution, real-time measurement with multimode fiber input. In addition to reducing measurement time, it visualizes longitudinal mode behavior such as mode hopping. This helps accelerate the development of laser light sources and laser modules while reducing manufacturing costs
- Laser characteristic inspection under varying temperature and current conditions within production takt time
- Performance Evaluation of Lasers for Optical Communications
- Measurement of Pulsed Lasers for LiDAR
- 100 % Inspection of LD Chips
- Detection of Irregularities and Quality Improvement in Laser Light Sources
- Long-term reliability testing of WDM (wavelength-division multiplexing) modules
- Assembly and alignment of wavelength-conversion lasers
Specifications

Please refer to the brochure for details.
Option
HDR Setting Disc(High Dynamic Range Measurement)
※This option is available only when purchased together with the SPG‑V500 main unit.





