Erbium-doped optical fiber amplifier

Abstract

The invention discloses a light-splitting light-integrating device, a production method thereof and an erbium-doped optical fiber amplifier. Two optical fibers are subjected to fused biconical taper to form the light-splitting light-integrating device, a fused biconical taper region is arranged in the middle of the light-splitting light-integrating device, a first side of the light-splitting light-integrating device is provided with a first light input end for receiving a first incidence beam of a first wavelength and a second light input end for receiving a second incidence beam of a second wavelength, and a second side of the light-splitting light-integrating device is provided with a first light output end of a first outgoing beam formed through integration of the output first light incidence beam and the second incidence beam in accordance with the preset coupling ratio, and a second light output end of a second outgoing beam formed through splicing of the output second incidence beam in accordance with the complementary coupling ratio. The invention also provides the production method of the light-splitting light-integrating device and the erbium-doped optical fiber amplifier with the light-splitting light-integrating device. By the aid of the light-splitting light-integrating device, the light can be spliced and integrated and the miniaturization of the erbium-doped optical fiber amplifier is facilitated.

Description

technical field [0001] The invention relates to an optical device, in particular to an erbium-doped fiber amplifier. Background technique [0002] A large number of optical splitters or optical combiners are used in modern network communication, and most of the existing optical splitters or optical combiners are made by fused and tapered optical fibers. For example, the Chinese invention patent application with the publication number CN1932566A and the Chinese invention patent application with the publication number CN102520485A both disclose the manufacturing method of light splitting / combining devices. The optical coupler is manufactured in the form of a cone, that is, a light splitting / combining device. [0003] Fused taper usually twists two or more optical fibers together, and heats the twisted part to a molten state, and at the same time slowly stretches both ends of the fiber to make a fused taper device (FBT). The fused tapered device is an all-fiber device, which ...

AI Technical Summary

Problems solved by technology

[0030] Because the erbium-doped fiber amplifier with this structure uses the splitting device 57 to split the pump light, and uses the light-combining device 58 to combine the split pump light and signal light, it will also cause the production cost of the erbium-doped fiber amplifier. Higher, and it is not conducive to the miniaturization of the erbium-doped fiber amplifier

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