Spectral Evolution Spectrometers And

Single-mode fiber for spectral detection

Single-mode fibers are designed to carry light directly down the fiber, with the core typically having a diameter of about 8 to 10 micrometers. 2 mm and constant grating period (uniform FBG) is proposed as an integrated dispersive element for spectral analysis in a single-mode glass fiber. This dispersive element is used to set up a fiber optical spectrometer that. The study proposes the U-shaped bent single-mode–multimode–single-mode (SMS) fiber structure that integrates the multimode interference (MMI) effect for enhanced mode dispersion and the Mach–Zönder interference (MZI) effect for spectral sensitivity improvement.