La description

● Using the visible light semiconductor laser which can be modulated as light source, the phenomenon is clear and intuitive; the wavelength is **0nm, the output power is ≥ *0mW and the power stability is ≤ ± 1%; the frequency modulation range is *0K***0KHz; the laser power meter is three and a half digital meter, the measuring ranges are **0μW, 2mW, *0mW, **0mW and the tunable range; the length of the fiber is **0m. ●Precise adjustment mechanism of multi-degrees of freedom is employed to couple fibers, so, hands-on abilities of students are cultured.