Whether the excimer mode or femtosecond laser mode is adopted, itstechnical characteristics make it difficult to carry o...

A remarkable feature of femtosecond laser is its ultra short pulse(femtosecond level). The energy of micro focus level i...

  There are many ways to make fiber Bragggrating (FBG), such as standing wave method, photoetching method, physicalpres...

Fiber Bragg grating (FBG) is a kind of special method to make therefractive index of fiber core change periodically in the axial direction, thusforming a diffraction grating in the core. Light travels