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  The working temperature of optical transceivers affects all the parameters of optical transceivers. If the ambient temperature of the optical transceiver changes, the operating current of the optical transceiver will vary with temperature. At the same time, the parameters of the optical transceivers change, which affects the normal transmission of optical transceivers. Today, we mainly talk about the causes of too high or too low temperature on optical transceivers and its impact.   What Is the Normal Temperature of Optical transceivers? Because the type and brand of the optical transceiver are complicated, the temperature of modules corresponding to different optical transceiver temperature levels are different and the temperature specifications defined by the supplier are different, whether the temperature of optical transceivers is abnormal or not needs to be considered according to these factors. Before we use the optical transceiver, it is best to check the vendor’s defin

  Before the advent of the 100GBASE QSFP28 optical transceiver (an optical transceiver that can be used to support 100G transmission), the development direction of the 100G network is 10G → 40G → 100G. After the 100GBASE QSFP28 optical transceiver appears, 10G → 25G → 100G or 10G → 25G → 50G → 100G development model began to spread widely in the industry, and now there are already some data centers began to adopt this method to achieve 10G to 100G upgrade. There are all kinds of 100G QSFP28 optical transceivers in the market, like QSFP28 CWDM4, QSFP28 PSM4, QSFP28 100GBASE-SR4, and QSFP28 100GBASE-LR4, etc.   So, the question is why 100GBASE QSFP28 optical transceiver is so ideal for 100G optical network? Will QSFP28 optical transceiver completely replace other 100G optical transceiver? Will QSFP28 optical transceiver change the development of data center? Maybe the post can give you an answer if you are interested   The Advantages of QSFP28 Optical Transceiver   The cost

  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

With the rapid development of optical communication, more and more fiber optic cables are increasingly used in different environments. Under harsh conditions, the ruggedness and durability of common fiber optic cables cannot meet operators’ requirements, especially for exceptional demanding applications. This post mainly introduces IP67 waterproof fiber optic cable & armored Fiber Patch Cablesuitable in harsh environment. All the types of waterproof fiber optic cables are available in Fiber-Mart.   The two fiber patch cables are armored fiber patch cable and IP67 fiber patch cable. As most fiber cable failures are usually caused by fiber breaks and contaminants, the fiber cable and the termination points of the fiber links should all be well protected. And the two types of fiber cable can perfectly meet most requirements of harsh cabling environment.   IP67 Fiber Patch Cable IP67 waterproof fiber optic patch cable can be used in harsh environment, providing more convenie

  Field assembly connectors are quicker and easier to assemble and terminate, but many in the industry raise concern over their long-term reliability. Technical and scientific community should not fall prey to the stereotypes, but unfortunately, many of the industry experts are yet to be convinced on the power of field assembly connectors.   It is a fact that fusion connection is a physical union of two glass threads that provides lowest possible loss due to connection loss, typically in the range of less than 0.05dB. A quick check on the technical data sheets of industry leading suppliers of Field Assembly connectors reveals that the typical loss from mechanical connection falls around less than 0.1dB.   What is the impact of 0.05dB over an FTTH network of 20 kilometers? Let us have a look before we jump in to conclusion.   An FTTH network typically spans around 20 kilometers. Considering an optical loss of 0.25dB/km maximum for the fiber at 1550nm, the attenuation contri

It is estimated that more than 5 billion optical fiber kilometers are installed on the earth including all kind of installations such as Submarine, Aerial, underground and premise. This number can be roughly converted to 138 million cable kilometers if we consider an average fiber count of 36 fibers per cable. With the progress of fiber to the home projects, this average will further go down since the premise cables are of smaller fiber counts. Higher count cables are mostly deployed in backbone/metro core networks. Extremely high count cables are utilized for data centers, but the lengths are limited. Recent reports from Prysmian shows development of 6912F cable for datacenter application.   Submarine cables have smaller fiber counts typically in the range of 6 to 12. Submarine cable system utilizes latest transmission technologies to achieve highest possible data transmission speeds and capacity over a single fiber. Long distance communication lines are made of typically from 24

  As a key component of copper cabling system, copper patch panel is popular with people. And there are Cat5e patch panels and Cat6 patch panels available on the market. It is not difficult to understand that Cat5e patch panel is used with Cat5e patch cable, while Cat6 patch panel is used with Cat6 patch cable jointly. But can I use Cat5e patch cable with Cat6 patch panel or Cat6 patch cable with Cat5e patch panel? This article will tell you the answer.   Overview of Cat5e and Cat6 Patch panel First, let’s have a brief overview of Cat5e patch panel and Cat6 patch panel. Cat5e patch panel is compliant with TIA/EIA 568 industry specifications and is used for high speed LAN transmission. In addition, Cat5e patch panels are available in 6-port and 8-port module groupings, in 8, 12, 24, and 48-port sizes. The high density panel design can be mounted to standard racks or cabinets, accommodate top, bottom or side cable entry, and also save rack space. While Cat6 patch panel is speciall

As an access to providing high-speed Internet speed, Fiber to the home (FTTH) has been highly favored in recent years. It can achieve high-speed and long distance transmission, from a central point directly to individual buildings such as residences, apartment buildings and businesses through installation and use of optical fiber. FTTH drop cable plays a prominent role during this process. So what is FTTH drop cable? And how to install? This article would provide a satisfied answer for you.   About FTTH Drop Cable FTTH drop cable contains 1 to 4 colored singlemode optical fibers with 250 µm individually, which provides a good solution for fiber to the home last mile solution. The cable contains two Fibre Reinforced Plastic (FRP) strength members and Low Smoke Zero Halogen (LSZH) jacket with nominal dimension 2 x 3 mm. They are fully meet the RoHS standards. With its small diameter, light weight and special structure, it is easy to use, to handle and to pull the fibers out from t

  When deploying the cabling system, sometimes you may encounter such situation when there is already brand A switch, but you got brand B optical transceiver. Then, the compatible issue is what you most worry about. Just like the following figure shows, Cisco SFP-10G-SR transceiver definitely works well when plugged into 10G SFP+ port on Cisco switch, so does HP SFP-10G-SR transceiver with HP switch. But when you plug Cisco SFP-10G-SR transceiver into 10G SFP+ port on HP switch, will the link perform well? The answer is “Yes”. However, not all cases that mix brands will get the answer “Yes”. There are still some important aspects that you have to take into consideration. This article will focus on compatible issues of optical transceiver.   Important Aspects of Optical Transceiver To ensure the whole link works at high performance level, before you use mixed-brand optical transceiver and switch, there are some important aspects of optical transceiver that you must think about.

  GBIC (Gigabit Interface Converter) is a hot-swappable Gigabit Interface optical module with SC connector. A gigabit interface converter (GBIC) is a standard for transceivers, commonly used with Gigabit Ethernet and fiber channel. A variation of the GBIC called the small form-factor pluggable transceiver (SFP),also known as mini-GBIC, has the same functionality but in a smaller form factor. When it’s best to use GBIC and When to use SFP? What’s the specific difference between GBIC and SFP? This article will talk about it.   GBIC vs SFP   GBIC is larger than SFP: “GBIC” stands for “Gigabit Interface Converter” and was quite popular in the 1990s. It served as a standard way of connecting to different media like copper and fiber optic cables. In contrast, “SFP” stands for “Small Form-Factor Pluggable,” which also serves the very same purpose as GBIC. The main difference between GBIC and SFP is their size. SFP is considerably smaller than GBIC. It is half the volume of GBIC and c

  OTDR is the main instrument in the field of optical fiber testing technology. It is widely used in the maintenance and construction of optical cable lines. It can measure optical fiber length, optical fiber transmission attenuation, joint attenuation, and fault location. OTDR has the advantages of short test time, fast test speed, and high test accuracy.   Optical Time Domain Reflectometer (OTDR), using the method of optical time domain measurement, emits a certain pulse width of light into the tested fiber, and detects the Rayleigh scattering (Rayleigh scattering) and Fresnel reflection (Fresnel reflection) optical signal power along the time Axis distribution, draw OTDR curve, to measure various optical cable and joint parameters to locate optical fiber fault points, and understand the distribution of optical cable loss. The following takes fiber-mart.com OTDR tester as an example to analyze and explain.   1. Test wavelength selection   Since OTDR is for optical fiber