Laser diode transmission characteristics management for high optical fiber coupling system stability with various spectral wavelength windows

Abstract This paper demonstrated the laser diode transmission characteristics management for high optical fiber coupling system stability with various spectral wavelength windows. Laser beam focus diameter and laser depth of field variations are clarified versus both beam lens diameter and lens focal length at the different spectral operating wavelength windows. Aperture transmission and transmitted power variations are demonstrated versus laser beam aperture diameter and laser power variations at aperture diameter of 1 mm. First and second fiber mode diameter variations are measured versus spectral fiber transmission wavelength for identical and nonidentical two fibers core diameter and numerical aperture. Fiber splice losses are clarified against both lateral offset and angular misalignment for identical and nonidentical fibers core diameter and numerical aperture. Fundamental mode field diameter and V parameter are indicated versus spectral fiber transmission wavelength and numerical aperture variations at fiber core radius of 5 μm.