CATV EDFA /Â EYDFA
Manuacturer in China
Premlink plays a vital role in designing and manufacturing CATV EDFA / EYDFA.
Premlink - Premium CATV EDFA/EYDFA
What is CATV EDFA?
CATV EDFA is an Erbium-doped Fiber Amplifier designed for use in cable TV networks. Since 1989, EDFA has been widely used in many optical communication systems, and it represents a significant milestone in the evolution of optical communication. In a cable optic transmission system, EDFA frequently serves as a fiber amplifier due to its low noise figure and high power output. It has the ability to directly boost optical signals while also increasing their transmission distance.
What is CATV EYDFA?
CATV EYDFA is an Erbium Yterbium Doped Fiber Amplifier designed for use in cable TV networks. Based on the CATV EDFA structure, CATV EYDFA adds a Ytterbium doped fiber amplifier module at the second stage and combines it with multi-mode pump laser to activate a higher optical power, which is used to boost the total output power by more than 40dBm. EYDFA usually appears in the style of multiple ports, which greatly simplify FTTH applications on CATV fiber networks.
EYDFA has increased the flexibility of optical communication systems in terms of fiber amplifier selection. In medium to long-distance cable TV fiber optic transmission systems and large multi-point distribution networks, optical transmitters have low transmission power, requiring the use of several EDFAs to cover the system’s optical nodes. EYDFA outperforms EDFA in terms of power output. One EYDFA can replace several or even dozens of EDFAs. EYDFA is a high power EDFA. Premlink has all kinds of high power EDFA.
Premlink Related CATV EDFA/EYDFA
Features of Premlink PL2000x CATV EDFA/EYDFA
Touchscreen GUI
The industry's first touchscreen for EDFA, easy to operate and very friendly user interface
Three Control Modes
PL2000x CATV EDFA/EYDFA can be configured into 3 amplifier modes which are APC, ACC and AGC
Wide Input Power Range
PL2000x EDFA / EYDFA can be turned on right away with output power when the input power is -10 ~ to +10dBm.
Adjustable Output Power
The industry's strongest, capable of being adjusted by both LCD and WEB, from -10 ~+0.5dB at 0.1dB/step.
Back Reflection*
Unique technology in the CATV industry. When back reflection is abnormal, EDFA immediately sounds an alarm, making it much easier for operators to identify the source of the issue
Threshold Flexible Setting
Premlink PL2000x allows for configurable parameters to track the EDFA's operation status across various networks and to display an alarm on both the LCD Screen and the web GUI.
SNMP and WEB Management
The integrated web browser on all PL2000x models is compatible with all commonly used web browsers. The interactive Web page menu is used to control and monitor the amplifier.
Dual Redundant Power Supplies
There are two hot-pluggable power supplies. The other power supply can function automatically simultaneously with the failure of the first.
Premlink – CATV EDFA / EYDFA Manufacturer in China
Works at CATV broadband over 35 years, offers all kinds of CATV EDFA and EYDFA according to customer’s request.
Block Diagram of Prmlink CATV EDFA
The Working Principle of Premlink CATV EDFA
The working principle is that When pump light passes through the erbium-doped fiber, the erbium element’s electrons are stimulated to a high energy level, resulting in an excited state. When signal light passes through an erbium-doped fiber, the excited erbium element emits photons towards the signal light, creating stimulated radiation and boosting the energy of the signal light, resulting in signal amplification. Specifically, when pump photons and signal photons collide in an erbium-doped fiber, the energy of the pump photons is transferred to the signal photons.
The erbium element in erbium-doped fibers has a unique energy level structure that may efficiently transfer the energy of pump photons to signal photons, resulting in signal light amplification. Furthermore, with erbium-doped fibers, the electrons of the erbium element remain excited for only nanoseconds, resulting in a rapid amplification process.
PL2000x CATV EDFA/EYDFA Model Selection
Output Ports (Typicial) | Output Power per Port ( Typicial) | Rack Mount Chassis | Optical Connector | Power Supplies | Power Cord |
|---|---|---|---|---|---|
2 | 16dBm | 1RU | SC/APC | Two AC Input | Chinese Standard |
4 | 17dBm | 2RU | LC/APC | Two DC Input | Euro Standard |
8 | 18dBm | 3RU | FC/APC | One AC + One DC Input | US Standard |
16 | 19dBm | / | / | One AC Input | UK Standard |
32 | 20dBm | / | / | One DC Input | Japan Standard |
64 | 21dBm | / | / | / | ... |
... | 22dBm | / | / | / | ... |
The Role of CATV EDFA in Fiber Optical Networks
EDFA allows the distribution of optical signals to multiple end users and to users across long distances in cable television (CATV) optical transmission systems. It usually consists of an external modulation optical transmitter (or a direct modulation optical transmitter) connected to an EDFA. An optical splitter divides the CATV EDFA’s optical power output before sending it to each sub-headend.
After being further separated by optical splitters to each CATV EDFA, it continues to spread into different villages, neighborhoods, and communities in the form of a star configuration. It is sent to every optical receiver following more splitting by optical splitters. Only a little amount of carrier-to-noise ratio (CNR) is lost when optical network signals pass through EDFA in 1550nm optical network systems; CSO and CTB are basically unaffected.
With high-power output, CNR, CSO, and CTB performance in long-distance (200km) transmissions, the 1550nm system may achieve Tier 4 image quality requirements after technical processing to effectively manage stimulated SBS and dispersion in optical fibers. (Distances using direct modulation approach of about 20KM).
By deploying up to four cascaded EDFA stages, Premlink CATV EDFA greatly increases the link length of analog CATV systems. This allows multiple users to share an optical transmitter and headend, which lowers system running costs.
In order to increase optical power, offset link attenuation, and make up for power losses brought on by optical power distribution, Premlink CATV EDFA can be applied both within and after the CATV optical transmitter.
Previous
Next