Double-envelope erbium-ytterbium optical fiber amplifier with restraining 1060 nm signal and protecting function
A fiber amplifier and protection function technology, applied in optics, instruments, optical components, etc., can solve problems such as unreliability, and achieve the effects of low cost, good compatibility and high stability
Active Publication Date: 2009-07-15
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology
[0004] It is an effective method to unload the 1060nm signal by using filters at both ends of the gain fiber, however, the method of using bulk optics will add more unreliability at high power
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[0036] The double-clad erbium-ytterbium fiber amplifier with 1060nm signal suppression and protection functions of the present invention will be described in detail below in conjunction with the embodiments.
[0037] Such as figure 1 As shown, the double-clad erbium-ytterbium fiber amplifier with 1060nm signal suppression and protection functions of the present invention includes an erbium-ytterbium co-doped double-clad gain fiber 1, a multiplexer 3, a multimode pump laser 8, and An optical isolator 6.1, a second optical isolator 6.2, and a general controller 9 are also provided with a first single-mode optical fiber WDM4.1 and a second single-mode optical fiber WDM 4.2. The multiplexer 3 may be a fiber multiplexer, or a multiplexer 12 with a micro-optical device structure. The wave combiner in the first embodiment of the present invention adopts an optical fiber wave combiner.
[0038] Wherein, one end of the erbium-ytterbium co-doped double-clad gain fiber 1 is connected t...
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Abstract
A double-cladding erbium -ytterbium optical fiber amplifier, which is provided with 1060nm signal curbing and protection functions. For the structure hereof, one end of the double-cladding erbium -ytterbium optical fiber is connected with a wave coupler, while the other end thereof and one output end of the wave coupler are respectively connected with one end of the first single mode optical fiber WDM and that of the second single mode optical fiber WDM. The first and the second single mode optical fiber rings are coiled around the single mode optical fiber which is between the double-cladding erbium -ytterbium optical fiber and the wave coupler as well as the correspondent first and second single mode optical fiber WDM. 1550nm wave splitting signal terminals of the two single mode optical fiber WDM are respectively connected with the first and the second photo isolators. 1060nm wave splitting signal terminals of the two single mode optical fiber WDM radiate to the free air via the optical fiber section or respectively enter the master controller via the first and the second photoelectric detectors after the photoelectric conversion. This utility model limits the amplification and the mase of 1060nm signal which is also separated from the other parts, so as to protect the other parts of the light path. Therefore, this utility model has the advantages of compatibility with the single mode optical fiber system, easy manufacturing and stability.
Description
technical field [0001] The invention relates to a double-clad erbium-ytterbium fiber amplifier, in particular to a single-mode fiber WDM device that unloads the 1060nm signal generated in the erbium-ytterbium fiber, which plays a role in isolating the 1060nm signal from other parts, and has the advantages of Compatible with the single-mode fiber system, the manufacturing process is simple, the optical path stability is good, and the double-clad erbium-ytterbium fiber amplifier with 1060nm signal suppression and protection functions enhances the stability and safety of the high-power double-clad erbium-ytterbium fiber amplifier . Background technique [0002] The 1060nm spontaneous emission originates from the excited state transition of ytterbium ions, which is an inherent phenomenon in erbium-ytterbium fiber amplifiers. Unlike pure ytterbium-doped fiber amplifiers or lasers, due to the presence of erbium ions, the excited state of ytterbium ions The energy is mainly releas...
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IPC IPC(8): G02F1/39G02F1/35H04J14/02G02B27/10G02B6/26
Inventor 傅焰峰龙浩付浩军邓韬江毅
Owner GUANGXUN SCI & TECH WUHAN