Self organizing coherent optic fiber wave guide and its producing method

Abstract

Using plasma chemical vapor deposition (PCVD) and modified chemical vapor deposition (MCVD) technique, the method produces rare earth doped optical fiber core rod. Seven or nineteen pieces of rare earth doped optical fiber core rod arranged in dot matrix in hexagon are placed into sleeve so as to form preformrod of multi core rare earth doped optical fiber. Then, the preformrod is drawn into selforganizing coherent fiber optic waveguide in certain size. When laser is pumped and coupled to the multi core active optical fiber, under action of pumped light, rare earth active ions in the multi core generate upward conversion so as to excite laser with same frequency and consistent phase. Or coherent carried out spontaneously outputs optical fiber laser with high coherence. The invention realizes synchronous generation of laser and coherent of laser. Features are: selforganizing coherent, low requirement on parts of laser system, high practicability, and convenient for application.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an optical fiber waveguide capable of laser self-organized coherence and a manufacturing method thereof. Background technique [0002] A fiber laser is a laser that uses an optical fiber as a laser gain medium or an upconversion medium. In 1964, the first generation of glass laser in the world was the original neodymium glass fiber laser. The fiber core used in the initial stage of fiber laser development was very thin, and the initial pump source was difficult to focus on the fiber core. Due to technical limitations, fiber lasers did not develop well in the next two decades. After the 1980s, with the advancement of various energy optoelectronic technologies such as semiconductor laser pumping technology and laser coupling technology, as well as the development of large core diameter double-clad active fibers and high laser energy fibers, fiber lasers have achieved unpreceden...

AI Technical Summary

Problems solved by technology

The main disadvantage of this system: how to split the beam of the main laser oscillator, and the design, processing and debugging of the optical path are relatively complicated

There is also a method of melting and tapering multiple optical fibers to expand the core mode field to achieve mode coupling of the transmitted signal, such as US Patent US6078716 and Chinese Patent 94101047.3, but these technical solutions simply couple the light wave signal

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