Physics Lab Equipment

LEOK-23 Fiber Optics & Photonics Experiment Kit

LEOK-23 Fiber Optics & Photonics Experiment Kit

Note: oscilloscope not included


  • Serial experiments of fiber optics & semiconductor laser

  • Flexible solution for different levels of students

  • Detailed instruction manual

  • Innovative design with quality components


Optical fiber has increased signal transmission bandwidth over longer distance. As the importance of fiber rises, numerous colleges and universities worldwide introduce more courses in optoelectronics and optical communications. This kit is designed to meet the increasing demand for learning fiber optic fundamentals and semiconductor laser characteristics. This Fiber Optic Experimental kit is a sister kit to LEOK-22, and is revised to include new experiments such as to characterize the parameters of semiconductor laser and measure the speed of light in optical fiber.


Using this kit, the following experiments can be conducted:


1. Stripping and scribing of glass fiber

2. Laser-fiber coupling to determine coupling efficiency

3. Threshold current and gain slope characterization of semiconductor laser

4. Influence of fiber bending on mode and polarization of optical fiber

5. Speed of light in optical fiber with refractive index estimation of fiber material

6. Fiber optical communication with audio signal modulating, transmitting, receiving and demodulating

7. Numerical aperture of optical fiber

Parts and Specifications

Optical railLength: 0.8 m1
Main unitLaser driver with modulation/demodulation ports1
Semiconductor laser10 mW at 650 nm with 2-D adjustable holder1
Fiber holder3-D adjustable1
Fiber spoolCore: 9.2 μm; length: 200 m1
Fiber supportV-groove with magnets for bare fiber mounting1
Photodiode detectorIncl X-Y adjustable stage ± 2.5 mm1
Laser power meter (LLM-1)

3-1/2 digits

Scale: 200 μW, 2 mW, 20 mW, 200 mW

Resolution: 0.1 μW

Fiber stripper
Fiber scribe
PolarizerDiameter: 27 mm1
White screen100 mm × 80 mm1
Signal cableBNC cables (3) and audio cable (1)4
Audio signal sourceMP3 with USB cable1
Bending loss altering deviceΦ4, Φ6, Φ8, Φ10, Φ121
12-aperture photodetector probe

Aperture: 0.5, 1, 2, 3, 4, 6 mm

Slit width: 0.2, 0.3, 0.4, 0.8, 1.2 mm

Power cord
Instruction manual

LEOK-23 Fiber Optics-1.jpg

I-P curve of diode laser

LEOK-23 Fiber Optics-2.jpg

NA of optical fiber

LEOK-23 Fiber Optics-3.jpg

Schematic of fiber optic communication

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