Telecom Skill Knowledge Center

  What Distinguishes FTTH From FTTR? Introduction: The communication sector has been steadily increasing optical bandwidth upgrades in recent years. Our lives are now more convenient thanks to the ongoing advancements in network infrastructure and optical access. Simultaneously, there is a rise in creative commercial applications, such online education, cloud VR, cloud gaming, and ultra-high definition video, all of which have rising demands on network latency, jitter, and bandwidth.As a result, FTTR has developed based on both fiber-to-home and fiber-to-building.   The idea behind FTTR and FTTH: Fiber To The Home, or FTTH, is an optical fiber communication transmission technique. In particular, fiber-to-the-home (FTTH) refers to the installation of optical network units (ONU) at residential or business locations. FTTR, or Fiber To The Room, is a novel form of optical fiber-based in-premises networking technology.   WHAT MAKES THE FTTR AND FTTH DIFFERENT? Currently, the operator's

 Why tunable DWDM transceivers are needed? As for fixed or tunable wavelength, DWDM transceiver can be divided into fixed wavelength DWDM transceiver and tunable DWDM transceiver. Fixed wavelength DWDM transceiver can only transmit a certain number of wavelengths, usually at 1310nm and 1550nm for 10G data transmission applications. The tunable DWDM transceiver, however, enables flexible selection of working wavelength or channel. Typically, these tunable DWDM optics are for the C-Band 50GHz. Around 88 different channels can be set with intervals of 0.4nm. Tunable transceivers are typically used as “spare-optics” in case of emergency. So why tunable DWDM transceivers are needed? As the technology develops, hundreds of different wavelengths in DWDM 50GHz have been adopted, a large quantity of backup DWDM optical modules are needed for additional protection. And tunable DWDM transceiver modules are the choices. Besides, it is common to stock fixed wavelength DWDM transceivers at hand in c

 How Do Communications Fiber Optic Cables Work? TLDR: In communications fiber optic cables, light is introduced into the core of an optical fiber via a light source (LED, Laser Diode).  The light rays reflect off the outer walls of the core (the cladding layer) until they reach the other end of the fiber where a light-sensing receiver converts the pulses into digital ones and zeros. How do fiber optic communications cables really work? At its most basic, a communications optical fiber cable is composed of glass strands, like threads, about the diameter of human hair, each of which can transmit messages modulated onto light waves at the speed of light. They offer greater bandwidth than copper wire cable and have become the go-to option to meet the demands of the age of the internet where large amounts of data (e.g., streaming apps) must be distributed to thousands of subscribers, miles away and instantaneously.  he first step to understanding how fiber optic works is to understand what