Dense Wavelength division multiplexing

WDM Filter Technology

As an unprecedented opportunity to dramatically increase the bandwidth capacity, WDM(Wavelength Division Multiplexing) technology is an ideal solution to get more bandwidth and lower cost in nowadays telecommunications networks. WDM Filters can separate or combine optical signals carried on different wavelengths in a cost-effective manner. Splitters versus Filters One issue with WDM-PON(Passive Optical Network) is that there is no industry-accepted definition. WDM-PON is an…

fiber optics

An Analysis on Principles and Key Techs of 40G/100G Coherent Optical Communication

As the large-scale deployment of 40Gb/s is carried out, many new 100G/s code modulation formats have emerged in the industry. For various transmission code patterns with different features, based on the comprehensive consideration on parameters of other system design, comprehensive selections are made from perspectives of transmission distance, channel spacing, compatibility with 40Gb/s and 10Gb/s systems, costs of the optical…

Dense Wavelength division multiplexing

Why to Use DWDM System in MAN and What Are its Networking Schemes?

On account that DWDM (Dense Wavelength Division Multiplexing) technology can make full use of the huge bandwidth resources of the optical fiber, greatly increasing the transmission capacity of the system and reducing the transmission cost, the technology has been widely used in the large-capacity transmission of long distance network and backbone network. If DWDM technology is introduced into the metropolitan…

Dense Wavelength division multiplexing

Do You Know These about CWDM?

With the emerging of CWDM(Coarse Wavelength Division Multiplex) tech in the optical communication industry, various CWDM optical transceiver products appear in the markets, such as CWDM SFP+, CWDM SFP, CWDM XFP, 100G QSFP CWDM4 and so on. Well, today, Gigalight will have an introduction to CWDM from these viewpoints that you should have control of it. CWDM Definition and CWDM…

WDM-wavelength division multiplexing

How Much Do You Know about Multiplexing Technology in Optical Transmission Network?

In optical transmission network, multiplexing technology is considered as an effective means to expand the transmission capacity of existing optical fiber networks. It can increase the transmission capacity of optic fiber in the most cost saving way, so as to quickly meet the increasing demand for high bandwidth. Now, some multiplexing technologies have been widely used and mature in optical…

Dense Wavelength division multiplexing

Do You Know These Advantages of CWDM?

With the development of data communication and telecommunication technology, the intention of MAN(Metropolitan Area Network)is no longer relative to the wide area network. Due to the high bandwidth and data transmission transparency of DWDM(Dense Wavelength Division Multiplexing) tech, people naturally hope to introduce DWDM as the platform of MAN. However, in the MAN, an optical amplifier is not needed on…