Laser Sourcer TW3109

Fiber Testing Instrument

Laser Source TW3109

Laser Source TW3109 can provide 1 to 4 output wavelengths to meet specific requirements, including the 650nm red source and the 1310/1550nm wavelengths for single mode fiber or the 850/1300nm wavelengths for multimode fiber, as well as other wavelengths according to customer needs. Together with the TW3208 optical power meter, it is the best match on performing loss measurements.







  • Output modulation: CW, 270Hz,1KHz,2KHz
  • Provides 1~4 output wavelengths which can be optional according to customer’s needs
  • High stability of the output power
  • Stable output wavelength
  • Backlight LCD display supports night operation
  • Compact size and decent appearance
  • Large LCD, easy operation
  • Maintenance in Telecom
  • Maintenance CATV
  • Test Lab of optical fibers
  • Other Fiber Optic Measurements


Model TW3109
Wavelengths(nm) 650 310/1550 850/1300 850/1300/1310/1550
Emitter Type FP-LD,LED or others please specify
Typical Output Power (dBm) 0 -7dBm for LD, -20dBm for LED
Spectral Width(nm) 1. =10
Output Stability ±0.05dB/15mins; ±0.1dB/ 8hours
Modulation Frequencies CW,2Hz CW,270Hz,1KHz,2KHz
Optical Connector FC/ universal adaptor FC/PC
Power Supply Alkaline Battery(3 AA 1.5V batteries)
Battery Operating Time(hour) 45
Operating Temperature(℃) -10~+60
Storage Temperature(℃) -25~+70
Dimension(mm) 175x82x33
Weight (g) 295
Techwin Recommendation: TW3109 Handheld Light Source is designed for optimal use with TW3208 Optical Power Meter for measuring optical loss on both single mode and multimode fiber cable.
All TW3109 Models TW3109 Optical Light Source, Protective Rubber Boot, 3pcs 1.5V Batteries, Instruction Manual, Cotton Swabs and Soft Carrying Case.

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