A Filter-Type Wavelength Division Multiplexer
A filter-type wavelength division multiplexer combines or separates a number of service signals into and from one optical fiber. It is also known as an optical add-drop multiplexer. This technology reduces costs by enabling the addition of new wavelength channels without requiring additional optical fiber infrastructure.
This device is extensively used in EDFA fiber amplifiers, Raman amplifiers and WDM optical networks. It features low insertion loss, low polarization dependency, high channel isolation and environmental stability.
SENKO’s FWDM is based on Thin Film Filter Technology
The FWDM is a micro optics device that uses optical filters to combine or separate wavelengths. It is used to transmit multiple signals over a single fiber, increasing the bandwidth of optical communication systems. SENKO’s FWDM is designed to provide high channel isolation, thermal stability, and low attenuation. It is available in standard and high isolation versions, which makes it ideal for a wide range of applications.
The filter WDM combines several wavelengths of signal with bite-rate up to 10G and separates them at the receiver end. It has a wide fwdm-filter-wavelength-division-multiplexer pass band, low insertion loss, low polarization dependence, and excellent environmental stability. It is widely used in CATV system, FTTx and PON system, Fiber Communication and Test Instrument.
In optical FWDM systems, incoming signals are separated into individual channels using a multiplexer and then combined onto a single optical fiber. The multiplexer is comprised of a series of optical filters that each transmit a specific wavelength of light and reflect the rest. Optical FWDM is an efficient technology for optical communication because it reduces the bandwidth requirement and the amount of fiber required.
Optical FWDM is also scalable, which means that additional wavelengths can be added to existing fiber infrastructure. This reduces the cost of upgrading or expanding the network and allows for faster transmission over long distances.
It has Two Types of Isolation
WDM is a fiber-optic technology that allows multiple light wavelengths to travel on the same optical fiber. This increases the capacity of optical fibers by allowing different data signals to be transmitted simultaneously. It is widely used by telecom operators to increase bandwidth capabilities without laying more optical fibers. WDM systems use multiplexers and demultiplexers to combine or separate different wavelengths of data. They also use EDFAs for power amplification of each wavelength.
The function of a Mux/Demux is to split the multiple wavelength signals into individual channels, and then process them with an optical receiver for restoration of the original signal. Isolation is a critical performance metric that must be high enough to prevent crosstalk between adjacent channels and interfere with the system’s optical performance. This is especially important in a multi-channel environment.
Optical multiplexers and demultiplexers have different performance requirements. In general, they should have low insertion loss and low polarization dependence, and be capable of supporting high-rate transmission. They should also have good environmental stability and high power handling capability.
Optical multiplexers and demultiplexers are used in a wide range of applications, including DWDM, CWDM, and SONET/SDH transport. They are also an integral part of high-speed broadband access networks. For example, a FTTH network would consist of a FTTH terminal multiplexer, a local transmit EDFA for power amplification, and a client-layer data signal source (such as SONET/SDH or a client-layer ethernet/LAN). The multiplexer would combine the data signals into a single optical wavelength.
It is Suitable for High-Power Optical Amplification Systems
As the demand for higher bandwidth communication services continues to grow, the need for more fiber capacity becomes increasingly urgent. Wavelength division multiplexing (WDM) technology is a proven and commercially deployed technique for increasing the capacity of optical fiber backbones, data center interconnects, and long distance data transmission. WDM Mux/Demux components are key building blocks of optical fiber transmission systems, providing the means to multiplex and separate wavelengths across a single optical fiber.
CWDM (Coarse Wavelength Division Multiplexing) systems use N optical transmitters that operate on different wavelength channels, which are separated by 20 nm intervals from 1270 to 1610. Using this method, lgx-plc-splitters the same transmission system can carry several optical signals at the same time. This significantly reduces costs for maintaining multiple communication lines.
However, the wide wavelength interval requires high technical specifications for lasers and a complex structure of optical multiplexers/demultiplexers. As a result, the cost of CWDM systems is still relatively high.
A DWDM terminal multiplexer is designed to meet the high-performance requirements of client-layer systems, such as Synchronous Optical Networking [SONET] and SDH (Synchronous Digital Hierarchy). It contains a wavelength-converting transponder for each data signal, an optical multiplexer, and an EDFA for power amplification of the multi-wavelength signal. In addition, a terminal demultiplexer, consisting of an optical de-multiplexer and one or more wavelength-converting transponders, separates the multi-wavelength optical signal back into individual data signals for client-layer systems.
It is Suitable for WDM Network Applications
In optical fiber communication systems, wavelength division multiplexing (WDM) allows different signal paths to be transmitted over a single optical fiber. It achieves this by combining signals with different wavelengths in the transmitter and demultiplexing them at the receiver. This method significantly increases the bandwidth capacity of optical fibers, which can support high-bit-rate data streams over long distances.
SENKO’s FWDM series is a micro optics device that can combine or separate signals with different wavelengths in a wide range. It is based on environmentally stable thin film filter technology and features low insertion loss, low polarization dependence and high isolation. It is also designed with unique pigtail processing and high quality AR coating for excellent environmental stability.
It is used in EDFA, Raman amplifiers, FTTx and PON system, fiber optical lasers, WDM networks and fiber optical instruments. It is available in a variety of lengths, with customized pigtail processing and an option for a 2mm or 3mm jacket.
Optical DWDM is an important technology in network deployment because it can make use of the full capacity of optical fibers. In addition, it is highly scalable and can easily be upgraded to accommodate future bandwidth demands without the need for significant infrastructure changes. It also saves on the costs associated with installing and maintaining additional optical fibers. Lastly, it can significantly reduce the power consumption of optical transceivers.