Coupling of a laser source to an optical data distributing device

摘要

A computer system has an optical data distributing device for transmitting and distributing optical signals. A laser source generates light for forming the optical signals, and an optical fiber with a graded index of refraction couples the light from the laser source to the optical data distributing device. A lens is disposed to image light generated by the laser source into an input end of the optical fiber. The magnification of the lens is selected as a function of a ratio of a numerical aperture and diameter of the laser source divided by a ratio of a numerical aperture and diameter of the optical fiber.

主权项

1. A computer system comprising:
a laser source for generating light beams for forming optical signals; an optical data distributing device that includes a hollow metal optical waveguide with beam splitters for transmitting and distributing optical signals; an optical fiber for coupling the light beams generated by the laser source into the optical data distributing device, the optical fiber core having a graded index of refraction; and a first lens disposed between the laser source and an input end of the optical fiber for imaging light from the laser source into the optical fiber, the first lens to magnify the light beams such that the fundamental mode of the magnified light beams matches the fundamental mode of the optical fiber, the magnification being set based on a ratio of a numerical aperture and a diameter of the laser source divided by a ratio of a numerical aperture and a diameter of the optical fiber.