Focus on Fiber Optical(FTTH) Equipment & Tester & Tools Since 2011.

FOT3306B Optical Fiber Identifier

FOT3306B  Optical Fiber Identifier is an essential instrument for the installation and maintenance of optical fiber projects. It can easily detect any spot of SM fiber cables. Through inserting a 1310 or 1550 modulated signal into the fiber, it is used to indicate the direction of the transmitting signals,  find and locate the specific fiber without interrupting the current work during the installation, cabling and maintenance.



Compact size, universal connector and mental material

Efficient identification without interrupting the current work.

H0.25 to test bare fibers, ribbon and H0.9/H2.0/H3.0

Display the direction and level of the transmitting signal

Beep prompt function



Telecom Projects

Optical Fiber CATV

Generic cabling system

Production and research of optical components





Identified Wavelength Range

800-1700 nm

Detector Type

Ø1mm InGaAs 2pcs

Identified Signal Type

CW 270Hz1kHz2kHz

Detection   sensitivity

-46--+10dBm(1310nm)  -50--+10dBm(1550nm)

Adapter Type

H 0.9/0.25 for bare fiber;  H   2.0/3.0   for pigtail

Insertion   Loss

H0.25-H0.9 1.0dB(1310nm)

             H2.0-H2.5 0.5dB(1310nm)

            H2.5-H3.0 0.1dB(1310nm)

Signal Direction

Left & Right LED

Signal  Intensity Test Range

-30~0   (270Hz,1KHz)

Ø0.9,   Ø2.0, Ø3.0,Ø0.25

-25~0   (2KHz)

Ø0.9,   Ø2.0, Ø3.0

-20~0   (2KHz)


Power Supply

9V(dry batteries)

Operating Temperature


Storage Temperature




Dimension (mm)



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