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LS310 Series

LS310 Series Light Source

LS310 Series

The LS310 Series of light sources is perfect for qualifying applications using fiber optics for the physical layer, including FTTx, CATV, PON, and long haul networks. These user-friendly instruments project a high-precision, semiconductor-grade laser for stable and accurate measurements.

LS310 Series units work in conjunction with a Visual Fault Locator (VFL) for detecting bends, splices, and faults in optical fiber.

DifUse the LS310A/B in conjunction with an AE210, 230, or 270 Optical Power Meter to access new paired functions such as wavelength auto-ID. Dual-λ mode switches between two wavelengths rapidly, producing measurement data for both.





Double Wavelength Light Source

Double Wavelength Light Source


1310 ± 20nm (FP-LD)
1550 ± 20nm (FP-LD)

1310 ± 20nm (FP-LD)
1550 ± 20nm (FP-LD)
1490 ± 3nm (DFB)

Output power

> -5dBm

> -3dBm


< 5nm


Single-mode, 9/125 μm

Power stability
(after 15min warmup)

± 0 04dB @ 20°C (30 min)
± 0 08dB @ 20°C (8 hrs)

Optical adapter

PC, FC / ST (default); APC, ST / LC (optional)

Tone generation

270 Hz, 1kHz, 2kHz


2x AA batteries; > 40hrs continuous operation (backlight off)


AC 100V~240V ± 10% output / DC 5V

Operating Temperature

-10°C ~ +60°C

Storage Temperature

--20°C ~ +70°C


7.3" x 3.3" x 1.8" (185mm x 85mm x 45mm)


10.6 oz (< 320g) (without battery)

  • Multi-wavelength output: 1310 & 1550nm, or 1310 & 1490 & 1550nm (depending on model)
  • CW mode or modulated mode: 270Hz, 1kHz, 2kHz
  • New features: pair with AE210 Series OPM to auto-verify wavelengths and run dual-λ testing
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