新聞動態

首頁

新聞動態

相關新聞

光纖分路器箱（Optical Fiber Splitter Box）是用於光纖通信系統中的光纖分配和連接的重要設備。它常用於以下幾個應用領域：光纖接入網絡（FTTx）：光纖分路器箱在光纖到戶（FTTH）和光纖到樓（FTTB）等光纖接入網絡中扮演關鍵角色。它用於將光纖訊號分配給不同的用戶或樓宇，並提供光纖連接點，使得用戶可以接入高速寬頻網路。

3-D Printing Optical Fiber

Molly Moser X Researchers used 3-D printing to make preforms for a step-index fiber (a) and a structured preform (b). These preforms were then placed in a draw tower (right) to make the final optical fiber. [Image: John Canning, University of Technology Sydney] The entire global telecommunications network, not to mention the ever-expanding Internet-of-Things (IOT), is tied together with string—silica optical fiber. Manufacturing this crucial connector is a laborious process, one that a research team in Australia believes it may have re-invented. Researchers at the University of Technology Sydney and the University of New South Wales have demonstrated a way to 3-D print a glass preform for fabricating glass optical fiber (Opt. Lett., doi: 10.1364/OL.44.005358). This method, according to the team, simplifies fiber production as well as enabling both novel fiber designs and applications. The art of drawing fiber Silica optical fiber has a multitude of applications, but it’s expensive and labor-intensive to make. It comprises two parts: the fiber core that carries light, and the cladding that traps the light in the core as it travels through the fiber. In order to minimize loss and keep the light trapped in the core, the fiber core must have a higher refractive index than the fiber cladding. Conventional methods of constructing the preform through which optical fiber can be drawn require spinning a hollow tube of glass with a carefully controlled refractive index profile on a lathe over a heat source. It’s essential that the fiber geometry is precisely centered during this process. 3-D printing the preform instead is thus a very attractive alternative—one that several members of the Australian team have been working toward for a while. Several years ago, the team successfully demonstrated the first fiber drawn from a 3-D-printed polymer preform. Applying this additive-manufacturing technique to glass, however, presents a tricky manufacturing challenge, as 3-D printing glass requires temperatures of more than 1900 °C. Researchers shone green light through the final optical fiber and measured loss. The orange inset shows a fiber cross-section. [Image: John Canning, University of Technology Sydney] Printing glass To apply the approach to glass, the team behind the latest study added silica nanoparticles into the photo-curable resin. The researchers then used direct-light projection (DLP) to 3-D print the cladding preform with UV light at 385 nm, and poured a clever mixture of polymer and silica nanoparticles—this time doped with germanosilicate—into the hollow, cylindrical preform. The addition of the germanosilicate to the core resin upped the refractive index. To overcome the heat quandary, the researchers applied a thermal debinding process. The debinding sloughs off the polymer and other impurities, leaving the silica nanoparticles behind, which are held together by intermolecular forces. Kicking up the heat even more, the researchers then fused the nanoparticles into a solid structure that could be inserted into a draw tower to be molded into the optical fiber. According to the team, the end result was the first silica fibers drawn from 3-D-printed preforms. Scattering and next steps To test the quality of the first-of-its-kind fiber, the researchers shone 532-nm green light through 2 meters of both single-mode and multimode fiber—and measured significant loss. But while the team concedes that there is “considerable scope to improve the transmission properties of this fiber,” the researchers also believe that the relative ease with which the fiber was created could make the technique a game changer for future fiber fabrication. In particular, the team suspects that this new method could enable the production of incredibly complex multicore and multi-shaped fiber designs for previously unrealizable applications. According to a press release accompanying the work, the researchers are interested in partnering with a fiber manufacturer to improve and eventually commercialize the technology.

光纤配线架解决方案(ODF)

发布时间：

2022-12-08 18:11

光纤配线架解决方案(ODF)

PCT光纤配线架解决方案包括对光缆、跳线、尾纤的集中配线、熔接及存储，并提供各种规格连接头、不同容量的光纤接入方案。
· 采用优质钢板, 静电喷涂，灰色
· 全程曲率半径控制
· 适用带状和非带状光缆
· 实现光缆开剥、固定、保护及可靠接地
· 上下均可进缆
· 模块化单元设计，便于扩容
· 适配器30°倾角
· 满足互连和交叉连接，在架和离架熔接
· 包括光缆的前接入和后接入方式
· 有清晰完整的走线等各种标识

技术指标:

使用条件
■ 温度: +5℃～+40℃(室内)
■ 相对湿度: ≤85% (+30℃) (室内)
■ 大气压力: 70Kpa～106Kpa
性能
■ 连接器损耗 (包括插入、互换和重复) ≤0.5dB
■ 回波损耗: SM: PC≥45dB
UPC≥50dB
APC≥60dB
■ 绝缘电阻(机架高压防护接地与机架绝缘): ＞1000MΩ ( DC 500V±50V)
■ 机架高压防护接地与机架间耐压: ＞3000V(DC)/min, 不击穿，无飞弧
■ 机架高压防护接地与光缆中金属护套相连，地线截面积＞6平方毫米