CN202794594U - 激光衰减装置 - Google Patents

激光衰减装置 Download PDF

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Publication number
CN202794594U
CN202794594U CN 201220117437 CN201220117437U CN202794594U CN 202794594 U CN202794594 U CN 202794594U CN 201220117437 CN201220117437 CN 201220117437 CN 201220117437 U CN201220117437 U CN 201220117437U CN 202794594 U CN202794594 U CN 202794594U
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loss
input end
attenuating device
fusion point
welding spot
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孙海明
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Shanghai Connet Fiber Optics Company Limited
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SHANGHAI KENAITE LASER TECHNOLOGY Co Ltd
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Abstract

本实用新型的激光衰减装置包括一种激光衰减装置,所述激光衰减装置通过复数段光纤熔接而成,且各光纤间的熔接点损耗自输入端至输出端逐渐增大。本实用新型由于采用以上技术方案,各熔接点损耗从输入端到输出端逐渐增大,因为输入端的功率较大,该处采用损耗较小的熔接点从而保证热量较小;直至通过前端一系列的衰减,将功率降低至一定范围之内,再加大熔接点的损耗,此时在熔接点处产生的热量已经较小,不足以造成熔接点的损坏。

Description

激光衰减装置
技术领域
本实用新型涉及光谱测试领域,尤其是高功率光纤激光器、光纤放大器,以及高功率泵浦光源的光谱测试。
背景技术
对于一般光谱仪来说,输入光的功率值最多允许在几百毫瓦,因此高功率光源的光谱测试需要先对输出光进行衰减后再接入光谱仪,目前常用的衰减器,都需要通过接头连接,这种结构存在以下问题:1.容易烧坏光纤连接器,或烧坏衰减器的连接头;2大量的热量进入衰减器,容易造成衰减器的损坏;3.接头部分会有部分反射光反射进入光源,有可能导致光源的损坏。
发明内容
本实用新型的目的是针对于现有技术存在的问题,提供了一种成本较低,损耗小,反射光小,能有效保护光源的激光衰减装置。
本实用新型的激光衰减装置包括一种激光衰减装置,所述激光衰减装置通过复数段光纤熔接而成,且各光纤间的熔接点损耗自输入端至输出端逐渐增大。
本实用新型由于采用以上技术方案,各熔接点损耗从输入端到输出端逐渐增大,因为输入端的功率较大,该处采用损耗较小的熔接点从而保证热量较小;直至通过前端一系列的衰减,将功率降低至一定范围之内,再加大熔接点的损耗,此时在熔接点处产生的热量已经较小,不足以造成熔接点的损坏。
附图说明
图1为本实用新型的结构示意图;
具体实施方式
为利于对本实用新型的激光衰减装置作进一步的了解,以下结合附图和实施例进行说明。
参照图1所示,本实用新型的激光衰减装置通过复数段光纤3熔接而成,在各光纤3之间形成熔接点2,且各光纤3间的熔接点2损耗自输入端至输出端逐渐增大。在输入端选用与光源1输出相匹配的光纤3,并以熔接的方式与光源输出相连,该第一个熔接点2的损耗要尽可能小,以此避免在该点产生过高的热量或回光;在第一个熔接点2之后保留30厘米左右的光纤3,然后与另一段30厘米左右的同一类型光纤3熔接,形成第二个熔接点2,该熔接点2的损耗略大于第一个熔接点2;以此方式,继续制作后续各熔接点2,且保持各点的损耗略大于前一个熔接点2;实际需要多少个熔接点2,可采用边熔接边测试输出功率的方式来决定,直至能满足光谱仪的输入要求;最后一个熔接点后面需熔接一段较长的常规光纤,以便使用裸纤适配器接入光谱仪输入端4。
本实用新型的衰减器与常规衰减器相比,成本较低;输入端采用熔接方式,损耗小,反射光小,可有效保护光源;各熔接点损耗从输入端到输出端逐渐增大,这样就使当功率较高时,损耗较小,从而熔接点的热量较小;直至通过前端一系列的衰减,将功率降低至一定范围之内,再加大熔接点的损耗,此时在熔接点处产生的热量已经较小,不足以造成熔接点的损坏;可根据实际光源输出功率的大小调整衰减装置的整体损耗,满足不同的需求。

Claims (1)

1.一种激光衰减装置,其特征在于所述激光衰减装置通过复数段光纤熔接而成,且各光纤间的熔接点损耗自输入端至输出端逐渐增大。
CN 201220117437 2012-03-26 2012-03-26 激光衰减装置 Expired - Fee Related CN202794594U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103376509A (zh) * 2012-04-27 2013-10-30 上海科乃特激光科技有限公司 衰减器
CN109390842A (zh) * 2017-08-10 2019-02-26 大族激光科技产业集团股份有限公司 泵浦合束器空余输入支路回返光的处理方法及光纤激光器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103376509A (zh) * 2012-04-27 2013-10-30 上海科乃特激光科技有限公司 衰减器
CN109390842A (zh) * 2017-08-10 2019-02-26 大族激光科技产业集团股份有限公司 泵浦合束器空余输入支路回返光的处理方法及光纤激光器
CN109390842B (zh) * 2017-08-10 2020-06-02 大族激光科技产业集团股份有限公司 泵浦合束器空余输入支路回返光的处理方法及光纤激光器

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