| 摘要 |
Disclosed is an optical waveguide fiber having a core (10, 12, 14) surrounded by a layer (16) of cladding material. The core is characterized in that it includes a region (14) of depressed refractive index. The inner radius ai of this region (14) is greater than zero, and the outer radius ao thereof is less than the core radius. By appropriately selecting the core index depression characteristics such as radial location, width, depth and shape, a fiber having the desired wave guide dispersion characteristics can be designed. Dispersion minimization over a wide wavelength range can be achieved, without adverse affect on system loss. |
