The optical transceiver is the terminal device that realizes optical signal transmission. Since the advent of the 1990s, optical transceivers have been in constant development, undergoing a series of changes in analog optical transceivers and digital optical transceivers. By 2010, the HD era of optical transceivers has finally arrived. Due to its superior performance, the application range of high-definition optical transceivers is expanding, and it is now developing in the direction of single-fiber large-capacity, multi-service, and network management. The following is a detailed analysis by Yuxuan Network (FS.COM), how is the development of the HD optical transceiver market? Taking multiplexing technology as the mainstream There are four main types of multiplexing technologies: frequency division multiplexing (FDM), time division multiplexing (TDM), wavelength division multiplexing (WDM), and code division multiplexing (CDMA), which are mainly used to solve single-fiber transmission capacity. The problem arises. Although high-definition optical transceivers bring a good visual experience to people, high-definition video signals have high speed and occupy a large bandwidth, especially for the popular HD-SDI applications, and the traffic is very large. The general HD-SDI signal rate is 1.485Gb/s, the 3G-SDI signal rate is 2.97Gb/s, and the HDMI supports 4.95Gb/s and 10.2Gb/s. Therefore, it is solved to transmit multiple channels of video on a single fiber. It has become the top priority of multiplexing technology. The multiplexing technology currently used mainly includes wavelength division multiplexing and time division multiplexing to realize the transmission of integrated services such as asynchronous data, audio, switching, and Ethernet. However, both of these solutions have their own drawbacks. The use of wavelength division multiplexing technology is high, while the time division multiplexing technology is technically difficult. If time division multiplexing is used, multiple signals such as video, audio, data, and Ethernet need to be combined to synthesize a single higher rate data stream, and then the individual data streams are decomposed into multiple previous ones at the receiving end. data flow. Therefore, this requires handling high-definition video, clock synchronization between interfaces, clock timing, and frame structure relationships between each other. In addition, intelligent technology is also a hot spot for high-definition optical transceivers. Intelligentization enables the device to self-diagnose, allowing users to view the operating status of the device and manage it conveniently. Technical difficulties The development of single-fiber multi-channel high-definition optical transceivers is inseparable from the multiplexing technology. So, what are the technical difficulties? First of all, because the clock system is very complicated, the operation is difficult. For example, the input HD video stream is locked and the clock is recovered. There are many high-definition formats for high-definition optical transceivers, and the actual video format is difficult to determine, so adaptive video input is required. Thus, for systems with reference clocks, the chances of locking the state are complex. At the same time, there are other clock synchronization, locking, debounce and other processing problems, which are the difficulties that technology needs to overcome. Due to equipment and cost constraints, the transmission of multi-channel video is still difficult to deploy. The 1-channel HDSDI bandwidth has reached 1.485G, making it difficult to support multiple video transmissions. If you want to multiplex, you must disassemble, embed, and assemble the video in the 1.485G stream, and ensure that the video quality is not affected. This requires a very familiar understanding of the HD video standard system. It is not very easy to do. of. Moreover, each HD video is asynchronous, the clock frequency and phase are inconsistent, and multiple HD video streams cannot be directly multiplexed, and frame synchronization of multiple asynchronous HD video must be realized. Due to the high rate and large storage capacity, it is impossible to adopt the time domain adjustment method like FIFO and RAM, and because the real-time video stream of the high-definition video stream contains various clocks, synchronization and other information, each byte can neither be added. Can not be deducted, so the code rate adjustment scheme cannot be used. This is also the main reason why the market is in urgent need and there is no multi-channel HD video optical transceiver. In addition, in order to ensure the authenticity of high-definition video and reduce the transmission capacity, generally only transmission of valid data is transmitted. During the transmission process, various signals such as TRS, DE, HS, VS, XYZ, VIP, etc. will disappear, and various signals will be regenerated at the receiving end, and a video stream of the same standard as the input will be assembled. Due to the complexity of various video formats, such as standard, non-standard, compatible 861, line, interlaced, frequency 50, 60HZ, etc., the generation of these formats will be very complicated and the workload is huge. In short, high-definition optical transceivers are evolving from single-way to multi-path transmission, and are developing in the direction of multi-functionality, standardization, and integration, but there are many technical problems to be solved. At present, security companies have begun to provide marketing solutions for the overall system solutions, making the early pure video optical transceiver products have developed towards the optical platform, integrating transmission equipment such as optical transceivers with other devices to form a unified system platform. The output waveform quality, load adaptability; has passed the State Power Electronics Product Quality Supervision Bureau Center for type testing, and has been in the aerospace, electronic technology, China Shipbuilding Heavy Industries, Weapon Industry and Equipment Research Institute, military production supporting units, military Universities and research areas widely used, and by many military customers praise. Dc Power Supply,Power Supply System,Militery Power Supply,Aviation Power Supply Jinan Xinyuhua Energy Technology Co.,Ltd , https://www.xyhenergy.com