XFP optical module can be said to be a kind of optical module that was born earlier. It is a hot-swappable, very small circuit area, serial-serial optical transceiver that can support SONET OC-192, 10Gbps Ethernet Network, 10Gbps fiber channel and G709 link, mostly use LC interface. XFP's Multi-Source Agreement (MSA) directly uses the XFI interface specification to define the power interface, which fully meets the limitations of the SDH optical transmission network. Compared with 1X9 and SFP modules, XFP has a higher transmission rate and transmission capacity, which also expands the application range of Ethernet to metropolitan area networks and wide area networks.
In fact, the XFP optical module is actually not an optical transceiver module (Transponder) but an optical transceiver (Transceiver). The difference between the two is that the optical transceiver is actually just a photoelectric conversion device, which is used to complete the mission of optical / electrical signal conversion, and other functions such as multiplexing / demultiplexing, 64B / 66B codec, etc. are made by the circuit board. On the chip. 10 Gbit / s technology is still the mainstream technology of the current communication system. XFP modules have become mainstream due to the advantages of low price, small size and wide application environment. In addition, high-port density applications can also be easily realized.
Structure of XFP optical module
XFP optical module is composed of three parts: transmitting, receiving, memory and diagnosis. The transmitting part includes TOSA and LD drive circuit, and the receiving part is composed of ROSA and main amplifier. The Flash / EE unit is mainly used to store the module type and interface Information such as form, transmission characteristics, product model, and manufacturing date. In addition to storing the above information, XFP optical modules with digital diagnostic monitoring functions also have a microcontroller and a series of digital-to-analog and analog-to-digital conversion interfaces for real-time monitoring of optical modules The five parameters are temperature, voltage, laser bias current, output optical power and input optical power.
XFP optical module adopts CDR (clock data recovery), APC (automatic power control), LA (limiting amplifier) ​​and the main chip GN2010EA integrated with the transmission driver. Compared with the traditional design, it not only reduces the design cost, but also reduces the design cost. the complexity.
Classification of XFP optical modules
BiDi XFP optical module
BiDi XFP 10km single-fiber bidirectional 10 Gigabit optical module supports 10G transmission rate. The transmitter uses a low-jitter, high-performance 1330nm / 1270nm DFB laser component (1330 / 1270nm wavelength), which can support a maximum transmission distance of 10km.
Features:
.Single Fiber Bidirectional (BIDI) Optical Module
.Single fiber bidirectional operation, XFP
.Integrated 1550 / 1490nm or 1550/1310 WDM
.Single power supply + 3.3V / + 5V power supply
.LVPECL / PECL data interface;
.Working temperature -40 ℃ ~ + 85 ℃ (industrial grade) 0 ℃ ~ + 70 ℃
. Meets GR-468-CORE requirements
.Complies with Laser Class 1 and meets the requirements of IEC60825-1
.Can supply products that comply with RoHS requirements
CWDM XFP optical module
CWDM XFP optical module is a low-cost WDM transmission technology for the access layer of the metropolitan area network. The CWDM XFP optical module uses CWDM technology, which can combine optical signals of different wavelengths through an external wavelength division multiplexer and transmit them through a single fiber, thereby saving fiber resources. At the same time, the receiver needs to use the wave demultiplexer to decompose the complex optical signal. The CWDM XFP optical module is divided into 18 bands, from 1270nm to 1610nm, with 20nm between each two bands.
Features
.1270nm to 1610nm wavelength 18 channels available
.Uncooled MQW DFB LD
. Package XFP
.Single power supply + 3.3V
.Operating temperature 0 ° C-70 ° C (commercial grade) -40 ℃ -85 ℃ (industrial grade)
.Complies with Telcordia (Bellcore) GR-468-CORE
.Class1 regulated products, meet the requirements of IEC60825-1 and IEC 60825-2
. RoHS compliant products
DWDM XFP optical module
DWDM XFP optical module is the so-called Dense Wavelength Division Multiplexing (Dense Wavelength DivisionMulTIplexing) XFP packaged optical module. To put it simply, Dense Wavelength Division Multiplexing is an optical fiber data transmission technology. This technology uses the wavelength of the laser to transmit data within the fiber according to bit parallel transmission or string line transmission. DWDM optical module is an optical module for dense wavelength division multiplexing. It has 44 commonly used channels to choose from.
Application of XFP optical module
XFP optical modules are widely used, including 10G bps SONET / SDH, Fibre Channel, 10G Ethernet, SONET / OC-192, SDH / STM-64HE and other applications including DWDM links.
The above is the introduction of XF optical modules by YFY Communication; YFY provides customers with one-stop optical network devices and low-cost optical communication products through a proprietary design, supplying a series of XFP optical module products. For more details, please visit the official website of gigalight.com.cn.
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