optic fiber Power meter and sensor

by www.fiber-mart.com
Power meters and sensors are used to measure the output power of the incident light from both the light source and the installed fibers.
 
 The power meter normally has built in calibration for the most frequently used wavelengths, but can be calibrated for other wavelengths as well.
 
 On older types of power meters and sensors it may be necessary to recalculate the reading if output power is measured at wavelengths other than 1310 mm.
 
 Different types of sensor (optical receiver) are available depending on the type of measurement to be made and the wavelength range. The sensors normally used permit a measurement range from + 10 to –80 dBm. Sensors are normally calibrated for 1310 and 1550 nm. If several power meters and sensors are used simultaneously, they must be calibrated against each other in order to produce congruent results.
 
 During routine maintenance testing of telecom network installations and for testing relatively small installations, such as data networks, a simple form of power meter should suffice. These handheld instruments have a limited range and not the same reliability as those described above.
 
 Handheld power meters can normally be connected for testing at different wavelengths: 850, 1310, and 15500.

评论

发表评论

此博客中的热门博文

Common Armored Fiber Optic Cables

  Armored fiber optic cables are often installed in a network for added mechanical protection, as they have extra reinforcing in the cable housing to prevent damage. Two types of armored fiber optic cables exist: interlocking and corrugated. Interlocking armor is an aluminum armor that is helically wrapped around the cable and found in indoor and indoor/outdoor cables. It offers ruggedness and superior crush resistance. Corrugated armor is a coated steel tape folded around the cable longitudinally. It is found in outdoor cables and offers extra mechanical and rodent protection.   The Structure of an Armored Fiber Optic Cable In basic armored fiber cable designs, the outer sleeve provides protection against wind, solvents, and abrasion. This outer sleeve is usually made of plastic such as polyethylene. The next layer between the sleeve and the inner jacket is an armoring layer of materials that are difficult to cut, chew, or bu
阅读全文

what the Differences Between FBT Splitter and PLC Splitter

  In FTTx and PON architectures, optical splitter plays an increasingly significant role to create a variety of point-to-multipoint fiber optic networks. But do you know what is a fiber optic splitter? In fact, a fiber optic splitter is a passive optical device that can split or separate an incident light beam into two or more light beams. Basically, there are two types of fiber splitter classified by their working principle: fused biconical taper splitter (FBT splitter) and planar lightwave circuit splitter (PLC splitter). You may have one question: what’s the difference between them and shall we use FBT or PLC splitter?   What Is FBT Splitter? FBT splitter is based on a traditional technology to weld several fiber together from side of the fiber. Fibers are aligned by heating for a specific location and length. Because the fused fibers are very fragile, they are protected by a glass tube made of epoxy and silica powder. And then a stainless steel tube covers the inner glass tu
阅读全文

Introduction of Optical Fiber Couplers and How Do They Work?

 What are optical fiber couplers? A fiber optic coupler can be defined as an optical component used with one or more input fibers and several output fibers in fiber optic systems. A coupler essentially puts two or more cores of fibers together to connect. The simple coupler is the fused fiber 2x2 coupler. Couplers are used as multiplexers that are resistant to certain wavelengths. A fiber output depends on the wavelength of light and the frequency of polarization. The fiber refractive index also plays a significant role in the performance. Let’s checkout how do optic couplers work to understand this better. How do fiber optic couplers work? Either fiber optic couplers separate optical signals into multiple paths or combine multiple signals in one direction. Optical signals are more complicated than electrical signals, making it more difficult to design optical couplers than their electrical copy. Unlike electrical currents, the optical signal consists of a stream of signal carriers, in
阅读全文