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ST flanged attenuator

Product Categories:
Connector / fiber connector

product description

Fiber optic attenuator SC fiber optic attenuator: It is applied to SC fiber optic interface. It looks similar to RJ-45 interface, but the SC interface is flatter. The obvious difference is the contacts inside. If it is 8 thin copper contacts The chip is an RJ-45 interface. If it is a copper pillar, it is an SC fiber interface. LC fiber optic attenuator: A connector used in LC fiber optic interfaces to connect SFP modules. It is made using a modular jack (RJ) latching mechanism that is easy to operate. (Commonly used in routers) FC fiber optic attenuator: It is applied to FC fiber optic interface. The external reinforcement method is a metal sleeve and the fastening method is a screw buckle. Generally used on the ODF side (the most used on the distribution frame) ST fiber optic attenuator: It is used in ST fiber optic interfaces, often used in fiber distribution frames, the shell is round, and the fastening method is screw buckle. (For 10Base-F connection, the connector is usually ST type. Commonly used in optical fiber distribution frame) Working principle of the attenuator: 1. Air isolation technology The transmission of light in optical fiber is restricted by the law of total reflection, which cannot be scattered and maintained. Relatively stable strength. And once it is separated from the optical fiber, an air gap is added between the optical fiber and the optical fiber, and the light will be scattered, thereby causing the attenuation of the light. Because light is scattered from the ordinary fiber into the air and is strongly scattered, to control the attenuation range to a certain extent, it is necessary to ensure the isolation distance and maintain the alignment of the two ends of the fiber. Through this principle, flanged fixed attenuators and adjustable attenuators can be made. The flange-type fixed attenuator uses an isolated attenuator, and produces an attenuator of a certain thickness according to the graph. The attenuator is implanted into the flange to fix the light attenuation. The flange-type adjustable optical attenuator uses the principle of mechanical rotation. The distance between the connectors at both ends can be adjusted through mechanical rotation. The optical attenuation can be between 0 ~ 30dB. 2. Displacement and displacement technology. This method is to shift and shift the cores of two optical fibers in a small amount to achieve the effect of power loss. By using ordinary pigtails, the cores of the two pigtails are fusion spliced with a fusion splicer in the case of misalignment, so that the core is lost during transmission, and a connector-type fixed attenuator is obtained, also known as an online fixed attenuator . 3. Attenuation fiber technology. Based on the absorption effect of metal ions on light, an attenuation fiber with mixed metal ions is developed. Like ordinary fiber, it has an attenuation coefficient per kilometer. This attenuation fiber also has a fixed attenuation coefficient, but this attenuation The coefficient is not calculated in kilometers, but in millimeters. Passing the attenuating fiber into the ceramic ferrule? After special processing, the fixed attenuator can be made into a yin and yang type. 4. Absorption glass method: The optically polished neutral absorption glass sheet can also be used in the production of optical attenuators. Using the material's light absorption characteristics, a sheet or strip of neutral dark glass is made and placed on the light path to attenuate the light intensity. Absorptive glass is distinguished by transmittance T and attenuation rate expressed in decibels. Transmittance T = transmitted light intensity / incident light intensity, attenuation rate η = 1 / T, attenuation rate expressed in decibels β = 10 x logη =-10 x logT, the attenuation rate expressed in decibels can be easily estimated. The attenuation rate when the slices are combined, the attenuation rate of the superimposed slices is added to the attenuation rate of the combined attenuation slice group, which is expressed in decibels. The flake shape is made a fixed attenuation value, and the strip shape has different attenuation values according to the continuous increase of the dark material inside. A single piece of light-absorbing glass can be used to make a fixed attenuator, multiple pieces of light-absorbing glass can be converted into step-adjustable attenuators through wheel conversion, and strip-shaped absorbers can be made into continuously adjustable attenuators through continuous displacement. 5. Solid-state optical attenuation technology The adjustable optical attenuators in the form of air isolation and absorption glass use mechanical methods to complete the attenuation tunability. There are also a small number of solid-state optical attenuation technologies such as tunable diffraction grating technology. , MEMS technology, liquid crystal technology, magneto-optical technology, planar optical waveguide technology, etc. Optical fiber attenuator performance index parameter unit index working wavelength nm 1310 or 1550 return loss dB ≥50 attenuation and accuracy dB 1 ± 0.5, 2 ± 0.5, 3 ± 0.75, 5 ± 0.75 8 ± 0.8, 10 ± 1, 15 ± 1.5, 20 ± 2.0 Input / output form FC, SC, ST, LC Temperature range ℃ -40 ~ + 80 Advantage product 1. Total supporting equipment (MDF): guarantee arrangement, test row, 25-line guarantee arrangement, 32 times Line test bar, 100-circuit line protection arrangement, 128-line test line, various types of security units, alarms, main distribution frame (cabinet) 2. Integrated wiring products: jumper frame, 150-circuit audio distribution module, 19 inches Installation bracket, network distribution frame, cable management frame, 110 jumper frame, super 5 and 6 modules, information panel, snap-in module, 10-loop module, stainless steel back frame, distribution box, network and communication tools, etc. . 3. Optical supporting equipment (ODF): optical fiber panel, optical fiber adapter, splice tray, six-position clamp (accessory), optical fiber jumper, pigtail, ODF wiring box, terminal box, optical fiber distribution unit, optical fiber wiring Racks (cabinet), etc. 4. Digital distribution series (DDF): digital distribution frame, 8 system DDF, 10 system DDF, 16 system DDF, 20 system DDF, coaxial connector, etc. Website: http: //www.yuancailiao. net / company / xs8888 / index.as http://xs8888.cn.gongchang.com/ Ali: http://xs8888lin.cn.alibaba.com/ Contact number: 13486015899 QQ: 939684731 Contact person: Li Xinlin

contact details

  • company name:
  • Cixi Xinshuo Communication Equipment Factory
  • Contact:
  • Li Xinlin
  • contact address:
  • Daqishan Industrial Zone, Guanhaiwei, Cixi, Zhejiang
  • Postal code:
  • 315314
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Cixi Xinshuo Communication Equipment Factory

Li Xinlin

  • address:
  • Daqishan Industrial Zone, Guanhaiwei, Cixi, Zhejiang (315314)