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What Are the Speeds of QSFP Optical Transceivers?

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  The qsfp transceivers  is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic device includes transmitting and receiving parts. The transmitting part is: input the electrical signal with a certain code rate, and then drive the semiconductor laser (LD) or light-emitting diode (LED) to emit the modulated optical signal with the corresponding rate after being processed by the internal driving chip. It has an optical power automatic control circuit to keep the output optical signal power stable. The receiving part is: the optical signal of a certain code rate is input into the qsfp optical module  and then converted into an electrical signal by the light detection diode. Ⅰ. Classification of optical transceivers: (1) According to the speed: 100Base (100M), 1000Base (Gigabit), 10GE for Ethernet applications; 155M, 622M, 2.5G, 10G for SDH applications. (2) According to the package: 1×9, SFF, SFP, GBIC, XENPAK, XFP and SFP+, QSFP, QSFP+. So, to
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What Are the Components of Internet of Things?

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  What are the basic components of IoT? To answer this question, this article introduces the relative analysis and knowledge in detail, hoping to help you to solve the question in a simpler and easier way. Ⅰ. What are the basic components of IoT? IoT can be roughly classified into the following four levels: sensing layer, network layer, platform layer and application layer. The details are as follows. 1. Sensing and Identification Layer The sensing layer is the foundation of the overall framework of IoT, and is an important link between the physical the information world. In this layer, we can sense the object and its surroundings through sensors. In this way, the object is given the ability to speak and release information, such as sound sensors, pressure sensors, photoelectric sensors and so on. The sensing layer is responsible for collecting information for IoT. 2. Network Construction Layer As a linking component, this layer is responsible for transmitting the sensory information t
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What Are the Common Fiber Optic Attenuators?

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  Fixed optical attenuator  is an optical device that can reduce the energy of optical signal. Through the attenuation of input optical power, it can avoid the distortion of optical receiver due to too strong input optical power. As an optical passive device, fiber attenuator is usually made of attenuation fiber with metal ions. It can adjust the optical power to the required level. It is mainly used in optical communication system to debug the optical power performance, calibrate the calibration of optical fiber instrument and reduce the attenuation of optical fiber signal. 1. Why use fiber optic attenuators? The intensity of optical signal received by various optical receiving equipment is limited, and the equipment can not work normally if the optical power is too weak or too strong within a certain range. When the optical power is too strong, the optical power will be adjusted by light attenuation to reduce it to an appropriate range, otherwise even if the equipment can be used, it
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What Are the Application Scenarios of Optical Transceivers?

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  The rapid development of science and technology makes people's lives change with each passing day. With the continuous advancement of applications such as 5G, big data, blockchain, cloud computing, Internet of Things, and artificial intelligence, data flow has increased unprecedentedly, and data center interconnection has become a research hotspot in optical communications.   The current high-speed optical transceiver application scenarios are mainly Internet data center networks, metropolitan area network optical transmission networks, and telecommunication networks represented by 5G bearer networks.   Ⅰ . The application of fiber optical transceivers   in data centers   The current data center is no longer just one or a few computer rooms, but a group of data center clusters. In order to realize the normal operation of various Internet services and application markets, coordinated operation between data centers is required. The real-time mass exchange of information between dat
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What Are the Advantages of Direct Attach Cable Over Active Optical Cable?

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  In recent years, with the rapid development of data centers and increasing data transmission among manufacturers and users, the rates of optical transceivers have evolved from 25G and 40G to the current 100G, 200G, etc. Correspondingly, AOC has been developed to a new level.   Active optical cable (AOC) can be said to be a new type of transmission medium for high-density and high-bandwidth applications in the era of big data. Compared with traditional cables, active optical cables have high transmission rates, long transmission distances, low energy consumption and convenient way to use. Active optical cables benefit communication equipment with the huge advantages of optical transmission, and it is an ideal transmission cable for data centers, consumer electronics and other fields.   However, why can direct attach cables   still develop in the market when AOC has such huge advantages?   1. First, let's take a look at direct attach cable Direct attach cable (DAC) is usually a fix
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What Are the 40G QSFQ+ Fiber Optical Transceivers and Their Differences?

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  40G networks are widely used in data centers. 40G fiber optical transceivers are the mainstream devices for interconnection between data center equipment. So what are the main types of 40g optical transceiver ? What are the differences between them?   The three types of 40G QSFP are 40G QSFP+ SR4, 40G QSFP+ LR4 and 40G QSFP+ PSM LR4. They are all compliant with 40G Ethernet, and data center switches support Infiniband 4xSDR, DDR and QSR. It has four data transmission channels, each with a transmission rate of about 10Gbps, and the simultaneous transmission of four channels can achieve a transmission rate of 40Gbps. It also supports hot-swappable QSFP package with an ultra-low power consumption.   1. 40G QSFP+ SR4 transceiver In 40G network transmission, it is usually used with MPO/MTP connectors. It uses multi-mode optical fiber for transmission. When matched with OM3 multi-mode optical fiber jumper, it can support a transmission distance of 100 meters, and when it is matched with mu
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The Features of SC Quick Connector

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  The Features of SC Quick Connector   In fiber optic cabling, field connector components are required in some cases. Typical examples are point-to-point installation, field installation, or maintenance. Field Mount Connector (FAOC) also known as fast/quick connector, is an embedded fiber optic connector that can be installed and connected in the field. Fiber optic quick connectors are widely used where fast connections are required, providing fast assembly and stable performance. The construction tools are simple and convenient without power supply and easy to operate, which greatly improves the construction efficiency and reduces the labor cost of FTTH.   The SC fast connector is a common type of field assembly connector for FTTX routing networks. What are the features of the SC fast connector?   Ⅰ . Fiber optic quick connectors can be installed on-site with flexible wiring   The optical fiber wiring project of the FTTX user terminal is many and scattered, and the site construction e
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