The analog optical transceiver uses PFM modulation technology to transmit image signals in real time. The transmitting end performs PFM modulation on the analog video signal, and then performs electrical-optical conversion. After the optical signal is transmitted to the receiving end, it performs photoelectric conversion, and then performs PFM demodulation to recover the video signal. Due to the use of PFM modulation technology, its transmission distance can reach 50Km or more. Through the use of wavelength division multiplexing technology, the two-way transmission of image and data signals can also be realized on an optical fiber to meet the actual needs of monitoring projects. Next, let's learn more about the characteristics of the analog optical transceiver and related brands!
Features of analog optical transceiver:
The signal transmitted in the optical fiber is an analog optical signal, which is cheap and more commonly used.
Disadvantages of analog optical transceiver:
a) It is difficult to produce and debug;
b) It is difficult to realize multi-channel image transmission with a single fiber, and the performance will be reduced. This kind of analog optical transceiver can generally only transmit 4 channels of images on a single fiber;
c) The anti-interference ability is poor, and it is greatly affected by environmental factors, and there is temperature drift;
d) Because the analog modulation and demodulation technology is adopted, its stability is not high enough. As the use time increases or the environmental characteristics change, the performance of the optical transceiver is also Changes will occur, which will bring some inconvenience to engineering use.
Some foreign brands of analog optical transceiver related brands
(in no particular order)
AB, AD, ANV, BIC, STV, MRD, OSD, OPTILINKS, PELCO, OPTELECOM, Infinova, Meridian, Siemens, Alcatel, ACTO, etc.
Some domestic brands (in no particular order)
SUN Telecom, SPACECOM, Ante Video, Xunwei, Feichang Technology, Haitianxing Technology (AV-HTX), Songtuo Networks, Optwon, Jixiang Zhongda, Huizhiguang Da, AngeTV, Blue Ocean (RHW), Tianwei Telecom, Frogvision, Nuolong, Shiqiao Optical Network, Zhaowei, Zhongwei, Wicresoft, Bokang, Xinchuang, Zhuangcheng, Hualong, Laitwei, Weidi, Omate, OPT Optel, Tianyi Communication, Tiandiweiye, Sunshine Yaohua, Beijing Aobo, etc.