The application discloses a kind of
optical fiber spectrometer and spectral detection method, it is related to spectral detection technical field, the
optical fiber spectrometer includes optical
signal receiving module, transmission
optical fiber and integrated in integrated shell optical
fiber end face miniature optical splitting device,
signal acquisition module, spectral
information processing module.Optical
signal receiving module is converted into parallel
light signal after
light signal, transmission to the optical
fiber end face miniature optical splitting device that binary
Fresnel diffraction lens is etched in transmission optical
fiber core using
photolithography method, obtain circular
diffraction spot, and it is irradiated to
signal acquisition module;
Signal acquisition module is converted into electrical signal by circular
diffraction spot, and transmission to spectral
information processing module, obtain spectral information.The application directly integrates optical splitting element in optical fiber end face, simplifies
optical path design, realizes the
miniaturization and portable of equipment by integrated shell, so that compact structure, stable performance, can realize high-precision real-time spectral detection, applicable to a variety of
spectral analysis scene.