Experimentation objectives and subjects:1. Fibrous structure and operation of fiber shape. 2. Laser and fiber couple, measurement of couple efficiency. 3. Electrooptic characteristic of semiconductor laser 4. Watch fiber mode and influence of fiber bending 5. Light velocity measurement of fiber, estimation of average refractive index of fiber material. 6. Control, shoot, fiber transfer, incept and blowup of analog signals. 7. Measurement of fiber numerical aperture. 8. Collection of vibration signals.