-
- Sopto Home
-
- Special Topic
-
- Multiplexer Knowledge
-
- What is Fixed Optical Drop Multiplexer?
Multiplexer Knowledge
- Why is Multiplexing Needed in Data Communication Systems?
- What is Concept of Multiplexing in Telephone System?
- What is Digital TV Frequency?
- Outlook of the WDM Networks
- DWDM Technical Overview
- CWDM Technical Overview
- How to Activate Cable Modems?
- How to Install a Fiber Optic Modem?
- How do I Choose a Best Fiber Modem?
SOPTO Special Topic
Certificate
Guarantee
Except products belongs to Bargain Shop section, all products are warranted by SOPTO only to purchasers for resale or for use in business or original equipment manufacturer, against defects in workmanship or materials under normal use (consumables, normal tear and wear excluded) for one year after date of purchase from SOPTO, unless otherwise stated...
Return Policies
Defective products will be accepted for exchange, at our discretion, within 14 days from receipt. Buyer might be requested to return the defective products to SOPTO for verification or authorized service location, as SOPTO designated, shipping costs prepaid. .....
Applications
Multiplexers can be used to connect PBX, Hot line and other devices of network from central site to user site through fiber optical cable.
SNS Page
SOPTO Products
- Fiber Optic Transceiver Module
- High Speed Cable
- Fiber Optical Cable
- Fiber Optical Patch Cords
- Splitter CWDM DWDM
- PON Solution
- FTTH Box ODF Closure
- PCI-E Network Card
- Network Cables
- Fiber Optical Adapter
- Fiber Optical Attenuator
- Fiber Media Converter
- PDH Multiplexers
- Protocol Converter
- Digital Video Multiplexer
- Fiber Optical Tools
- Compatible
Related Products
Performance Feature
High integration desig
Low power consumption
Good EMC, EMI
Stable and Reliable
Multiplexer Knowledge
Recommended
What is Fixed Optical Drop Multiplexer?
Early FOADMs, with preassigned channels at static nodes, were typically built with thin-film filters (TFFs), and allowed adding and dropping of individual or multiple wavelength channels from a dense wavelength division multiplexer/demultiplexer (DWDM) multichannel stream. Some models currently available are configurable (COADMs) in that the manufacturer can factory-customize the number of channels, filter specifications, and power equalization.
For dense channel plans with 50GHz channel spacing, the FOADM typically includes an optical frequency interleaver. FOADMs or COADMs that feature power equalization include set-screw-adjustable variable optical attenuators. Most configurations boast low loss and are temperature-insensitive.
FOADM to filter as the main component and its function is fixed to join or retrieve certain light wavelengths. General common FOADM can be divided into three types, namely Thin Film Filter type (TFF type), Fiber Bragg Grating (FBG type) and integrated planar Arrayed Waveguide Gratings (AWG type).
- TFF FOADM using thin film between the filtering effects of the different refractive index.
- FBG FOADM use of fiber Bragg grating filtering effect, with two circulators can become FOADM.
- AWG FOADM generally used in semiconductor fabrication processes, the integration of different refractive index material is formed on a flat substrate in a planar waveguide, when different wavelength light source is incident through the coupling after the import side, due to take a different path length, while the different phase delay caused by different wavelengths and thus produce certain wavelengths in the export side to form a constructive or destructive interference, making waves in the export side, the different wavelengths will follow the design on a different channel to reach, and thus achieve FOADM function.
For More Information about Multiplexing and Multiplexers, please visit our website sopto.com.