Patent
Optical fiber device and production thereof
Kouda Toshihiro,Tousen Takashi +1 more
TLDR
In this article, the authors proposed to improve the optical coupling efficiency by making an optical fiber having a smaller core diameter so taper as to have a larger numerical aperture and giving a special condition to the taper angle when the optical fiber is coupled to an optical fibre having a larger core diameter.Abstract:
PURPOSE:To improve the optical coupling efficiency by making an optical fiber having a smaller core diameter so taper as to have a larger numerical aperture and by giving a special condition to the taper angle when the optical fiber is coupled to an optical fiber having a larger core diameter.read more
Citations
More filters
Patent
Connector employing mode field modification
TL;DR: In this article, a mode field modifier for optical fiber having a core and a cladding of outside diameter d is described, where the diameter D1 of the first cladding layer at the large diameter end is greater than d.
Patent
Optical fiber laser device
TL;DR: In this paper, an optical fiber with a large core diameter was added with rare earth, and excited light was emitted to the fiber for stimulated emission, thus improving the power density of light.
Patent
Fiber for optical energy transmission
TL;DR: In this article, a cylindrical metallic layer and a conical metallic layer are provided in order from the optical fiber end face 4 to reduce the leakage of light in input and output terminals by coating fiber side faces near input/output terminal faces of an optical fiber with a metallic layer whose reflection factor of light is >=95% with respect to the wavelength of a related light.
Patent
A connecting structure for connecting optical conductor
TL;DR: In this paper, a connecting structure for connecting optical conductors through which light energy is transmitted is proposed, which comprises a coupling ring of an inner diameter approximately equal to the outer diameter of the optical conductor rod, an edge surface of the optic conductor rod and that of another optical conductor rod to be connected with it in the coupling ring and being arranged so as to be opposed to each other or a large number of optical fibers being connected through the use of matching oil or optical paste.
Patent
Optical connector and endoscope system
TL;DR: In this paper, the authors proposed an optical connector which restrains a reduction in optical transmission efficiency due to expansion of a wavelength range of transmission light without causing increases in cost and the size of the device.