Recent years, PON technology has been more widely used in the fiber optic industry because of its advantages on building cost, protection cost and the broad width. And in China, the three major telecom operators - China telecom, China unic…

Optical fiber communications have changed our lives in many ways over the last 40 years. There is no doubt that low-loss optical transmission fibers have been critical to the enormous success of optical communications technology. It is les…

In order to research the present situation and the existing problems about CWDM technology, Fiberstore invited some equipment manufacturers include Huawei, Shanghai bell alcatel(asb), CIENA, light bridge, Fire network to test CWDM equipmen…

Wavelength Division Multiplexers, just we usually called it WDM, it includes CWDM and DWDM. Practically all DWDM systems use array waveguide (AWG) multiplexer/demultiplexers. The Figure shows a schematic layout of an AWG demultiplexer; a m…

Using the growing deployment associated with entry Fiber Optic Cables targeted with regard to FTTH, several set up choices are also attempted through telecommunications providers. The objective of several deployment methods would be to dec…

In 2002, which the pluggable transceivers could be used for WDM systems, the inventor at that time on the one hand, only for reduce the cost about form factor of WDM transceivers and on the other hand it could unify WDM transponder design.…

Many fiber optic applications amplification from the optical transmission. For example, long-haul DWDM techniques, Previously, it uses expensive electronic of the optical signal every 100 kilometres. The current contemporary long-haul DWDM…

The convergence of wired and wireless systems through the use of DAS networks based on optical-fiber connections can be envisioned. It is, therefore, important to consider the fiber-optic in infrastructure most suitable to support these sy…

CWDM VS DWDM differ noticeably in the spacing between adjacent wavelengths. DWDM packs many channels into a small usable spectrum, spacing them 1 to 2 nm apart; DWDM systems support a high channel count, but also require expensive cooling …

Traditionally, SONET platforms have been dedicated to services that could be encapsulated within SONET frames. Today vendors not only can deliver SONET services from MSPPs, but they also can hand off these services in a passive CWDM multip…

Inter-Switch Link (ISL) protocol, is a cisco proprietary protocol, Can only be used for interconnection between Cisco network equipment, it is mainly used for maintenance the VLAN information such as the traffic between the switches and ro…

Coarse WDM systems have been in wide use for metropolitan area backhaul and business access since the very beginning of the twenty-first century. They are based on up to 18 CWDM channels spaced 20 nm in the wavelength region 1270-1610 nm, …

We all have a knowledge of CWDM optical multiplexer technology. but how to choose suitable solution is what we need to know. As we know, because of its costs, DWDM is more suited to longer-reach applications if developers begin to value th…

We all have a knowledge of CWDM optical multiplexer technology. but how to choose suitable solution is what we need to know. As we know, because of its costs, DWDM is more suited to longer-reach applications if developers begin to value th…

Cisco CWDM OADM are passive devices, and comprises a divider and a combiner capability to multi- wavelength optical fibers from one fiber to change. Color matching type OADM device side connector and Cisco CWDM GBIC or Cisco CWDM SFP docki…

Because of the rapid development of data services, the speed of network convergence is accelerating, MAN is becoming a focus of network construction, market competition pressure makes the telecom operators more sensitive to the cost of net…

CWDM is an optical technology for transmitting up to 16 channels, each in a separate wavelength or color, over the same fiber strand. The CWDM solution help enable enterprise and service provides to increase the bandwidth of an existing Gi…

Fiber optic splitter is used to split the fiber optic light into several parts at a certain ratio. For example, a 1×2 50:50 fiber optic splitter will split a fiber optic light beam into two parts, each get 50 percent of the 1x8 splitter or…

Fiber have become an integral part of today's communication networks by transmission media because of its high transmission rate, low noise, and confidentiality, etc. With the application trends of the entire communications technology in t…

In the optical communication system, and in many occasions there need to reduce the power of the optical signal, for example, the optical power of the optical receiver is very sensitive to overloading, the input power must be controlled wi…

We know, fiber optical splitter is a key optical device in PON systems, which splits the optical signal power finally into all the output ports. In the PON field plant shown in the Figure, a 1×8 Fiber Splitterto 1×32 fiber splitter is plac…