Five Tests to Ensure the Fiber Patch Cord Quality
The quality of fiber patch cords affects the entire fiber-optic link. Each fiber patch cord must be strictly tested before leaving the factory. So what tests will a fiber patch cord manufacturer do to ensure the high quality of patch cords?
In order to ensure the quality of optical patch cords, the following five types of inspection tests are generally carried out before leaving the factory.
1. Fiber patch cord insertion loss/return loss detection
Insertion loss and return loss are key parameters that affect optical patch cords. The TIA standard clearly stipulates that the maximum insertion loss of the optical patch cord is 0.75dB (that is, the acceptable maximum value).
For most fiber patch cables on the market, the normal range of insertion loss is between 0.3dB and 0.5dB, and the range of some low insertion loss is between 0.15dB and 0.2dB. Return loss values are expressed in dB and are usually negative, so higher values are better, and typical specifications range from -15 to -60 dB.
According to industry standards, the return loss of Ultra PC polished fiber optic connectors should be greater than 50dB, and the return loss of bevel polish is usually greater than 60dB. PC type should be greater than 40dB. For multimode fiber, typical RL values are between 20 and 40dB.
The indicators of general carrier-grade jumpers are that the insertion loss is less than 0.3dB, and the return loss is greater than 45dB.
2. Fiber patch cord end face inspection
The cleaning of the end face of the optical fiber connector directly affects its performance. For example, scratches, pits, cracks, dust pollution, etc. on the end face of the optical fiber will cause the loss of the connection signal, resulting in poor insertion and return loss.
3. Fiber patch cord 3D interferometer inspection
3D interferometer testing is mainly to test the geometry of the fiber end face, and the parameters include curvature radius, vertex offset, fiber height, and so on. The end face of the fiber patch cord needs to be ground into a spherical surface, but the products manufactured by the actual production process cannot be perfect.
What are the appropriate values for the radius of curvature, vertex offset, and fiber height?
Therefore, the end face shape is specified in the technical standard, which includes the radius of curvature ROC, vertex offset, and fiber height.
According to the technical standards of the IEC organization, the reference value of the ROC radius of curvature is that the PC type connector is 10~25mm, and the APC type connector is 5~15mm. Vertex offset refers to the offset between the vertex of the curved surface and the fiber axis. If the vertex offset is too large, the deformation of the end face is enough to cause physical contact between the fibers. Therefore, the technical standard requires the vertex offset of the fiber jumper ≤ 50μm.
Fiber height refers to the height of the fiber end face relative to the ferrule end face. The fiber end face may protrude above the ferrule end face or may be recessed below the ferrule end face. The range of optical fiber height specified in the technical standard is -250~+250nm.
4. Fiber patch cord mechanical performance test
For
example, pull test, test optical patch cord under specified pull force
to verify fiber attenuation and fiber elongation strain safety factor.
5. Fiber patch cord ambient temperature experiment
It is necessary to test the performance indicators of optical fiber connectors under different ambient temperature conditions.
- |
- +1 赞 0
- 收藏
- 评论 0
本文由出山转载自T&S News，原文标题为:Five Tests to Ensure the Fiber Patch Cord Quality，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
相关推荐
Structures and Applications of Fiber Bragg Grating Sensors
A Fiber Bragg grating sensor can be used as a kind of fiber sensor. Like the optical fiber sensor, it has many irreplaceable advantages compared with the traditional electric sensor, such as no electromagnetic interference, lightweight, small size, no corrosion, etc.
技术探讨 发布时间 : 2023-09-19
WDM Wavelength Division Multiplexing - Ideal for High-speed Optical Fiber Transmission Expansion
WDM (Wavelength Division Multiplexing) wavelength division multiplexing system mainly provides an easy-to-implement solution for long-distance transmission of high-speed and large-capacity information, which is convenient for the transmission expansion of communication networks.
技术探讨 发布时间 : 2023-08-26
What is WDM?
Wavelength Division Multiplexing (WDM) is a technique in fiber optic transmission for using multiple light wavelengths to send data over the same medium. Two or more frequencies of light can travel along one fiber, and multiple signals transmit in an optical waveguide at different wavelengths.
技术探讨 发布时间 : 2023-08-20
How to Define the Three Value Standards of the End Face of the Patchcord?
The two end faces of the fiber must be precisely butted so that the light energy output by the transmitting fiber can be coupled to the receiving fiber to the maximum extent. The successful connection of optical fiber lines depends on the quality of the physical connection of the optical fibers.
设计经验 发布时间 : 2023-10-07
The Difference Between Fiber Patch Cord and Fiber Pigtail
Optical fiber patch cords are cables directly connected to desktop computers or devices to facilitate device connection and management. Patch cords have a thicker protective layer and are often used between terminal boxes and optical transceivers.
设计经验 发布时间 : 2023-12-02
What is an Optical Module?
The function of the optical module is photoelectric conversion. The transmitter converts the electrical signal into the optical signal, and then the receiver converts the optical signal into the electrical signal after transmission through the optical fiber.
技术探讨 发布时间 : 2023-10-02
What Are the Advantages of OM5 Fiber Patch Cables Compared to OM3 and OM4?
“OM“ in optical communication refers to “Optical Multi-mode“, optical mode, which is a standard for multimode fibers to express fiber grades. At present, the fiber patch cord standards defined by TIA and IEC are OM1, OM2, OM3, OM4 and OM5.
设计经验 发布时间 : 2023-12-22
What’s Fiber Array?
One- or two-dimensional arrays of optical fibers are known as fiber arrays, fiber-optic arrays, or fiber array units. Instead of being formed over the entire fiber length, such an array frequently only exists for the very end of a bundle of fibers. Such an array‘s function typically involves coupling light from a source array to the fibers or from the fibers to another component, like a set of planar waveguides on a photonic integrated circuit. The following explanations cover various other applications.
技术探讨 发布时间 : 2023-08-31
PLC Optical Splitter vs FBT Optical Splitter: What‘s the Difference?
An optical splitter is a passive optical device that can split an input optical signal into multiple output optical signals, and is widely used in passive optical fiber networks. According to the different working principles, the optical splitter is divided into PLC splitter (planar waveguide optical splitter) and FBT optical splitter (fused taper optical splitter), then what do you know about these two optical splitters? What is the difference between them?
技术探讨 发布时间 : 2023-12-13
Type Selection and Application of Fiber Transceiver
Although optical modules are a trend to replace fiber transceivers, there is still a relatively large user base for fiber transceivers. For example, fiber transceivers are still commonly used transmission products in monitoring systems.
设计经验 发布时间 : 2023-11-15
LC Duplex Fiber Optic Connectors for High Density Environments with the Features of High-reliability, Low-cost And High-density
With the rapid application of 5G, how to provide a high-density, low-cost, easy-to-manage, and high-reliability network cabling system for data centers has become an increasingly important requirement. The LC duplex fiber optic connector is a high-reliability, low-cost, high-density wiring solution.
技术探讨 发布时间 : 2023-12-09
What is the Difference Between AOC and Optical Transceiver?
AOC active optical cable is an optical fiber with a module attached to each end, which is equivalent to a cable and a module.AOC active optical cable is also widely used by many customers because its cost is cheaper than that of two separate modules plus one optical fiber.
技术探讨 发布时间 : 2023-09-26
Detailed Introduction of Fiber Jumper Interface Types PC, APC, UPC
In order to make the end faces of the two optical fibers better contact, the ferrule end faces of the fiber jumpers are usually ground into different structures. Common grinding methods are PC, APC, UPC. PC/APC/UPC represents the front face structure of the ceramic ferrule.
技术探讨 发布时间 : 2023-12-08
电子商城
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
我要提问
登录 | 立即注册
提交评论