2012年2月29日星期三

The low-cost, high-speed optical module

The development direction of optical module —— low-cost, high-speed



Communication devices have becoming smaller, the interface density of the interface board are increasing to high density. That make the optoelectronic devices develop to low-cost, low-power direction. Optical devices generally using hybrid integration technology and airtight packaging process, the next phase of development will be a non-airtight package, need to rely on a passive optical coupling (non-XYZ direction adjustment) technology to further improve the degree of automated production, reduce costs. With the rapid growth of the optical transceiver module market demand, ASIC supplier of the functional part of the circuit is gradually increasing. Suppliers’ positive investment in scale, serialized facts makes the IC performance become more perfect, the cost getting lower and lower, and shortening the development cycle of the optical transceiver module, reducing the cost. Particularly those dealing with high-speed, small signal, high-gain preamplifier use GaAs process technology, the development of SiGe technology, the chip yield and manufacturing costs are well controlled, can further reduce power consumption .What’s more ,using the non-cooling lasers to further reduce the manufacturing cost of optical modules. The small package fiber optical transceiver modules using low-voltage 3.3v power supply ensure the increase of the port will not raise the system power consumption.

This information from :FiberStore

2012年2月23日星期四

CWDM SFP and DWDM SFP Transceiver moudle Recommend

The following recommend CWDM SFP and DWDM SFP all Compatible for Cisco swith and router.
The following recommend CWDM SFP and DWDM SFP all Compatible for Cisco swith and router.
And the CWDM SFP module are from 1000Base to 4Gbase. The DWDM SFP all  are 2.5G.Price is different according the size of capacity.
Cisco DS-CWDM4G1590    4G CWDM SFP Transceiver Module
Cisco CWDM-SFP-1470-120   1.25G CWDM SFP Transceiver 
Cisco CWDM-SFP-2.5G-1610   2.5GCWDM SFP Transceiver Module
Cisco CWDM-SFP-1430 1000Base-CWDM SFP Transceiver 
Cisco DWDM-SFP-2877 CH61 2.5G Transceiver Module
Cisco DWDM-SFP-3504 CH53 2.5GTransceiver Module
 Cisco DWDM-SFP-4851 CH36 Compatible Transceiver ModuleThe following recommend CWDM SFP and DWDM SFP all Compatible for Cisco swith and router.
And the CWDM SFP module are from 1000Base to 4Gbase. The DWDM SFP all are 2.5G.Price is different according the size of capacity.

Cisco DS-CWDM4G1590 4G CWDM SFP Transceiver Module
Cisco CWDM-SFP-1470-120 1.25G CWDM SFP Transceiver
Cisco CWDM-SFP-2.5G-1610 2.5GCWDM SFP Transceiver Module
Cisco CWDM-SFP-1430 1000Base-CWDM SFP Transceiver

price:$150.00-$80.00
Cisco DWDM-SFP-2877 CH61 2.5G Transceiver Module
Cisco DWDM-SFP-3504 CH53 2.5G Transceiver Module
Cisco DWDM-SFP-4851 CH36 Compatible Transceiver Module

price:$580.00

This information from :FiberStore

2012年2月15日星期三

Optical module development direction-Miniaturization

The miniaturization of optical transceiver as fiber access network core devices to promote the development of the trunk optical transmission system to lower costs, makes the configuration of the optical network is more complete and reasonable.

The optical transceiver module composed of optoelectronic devices, functional circuits, and optical interface structure, optoelectronic devices, including transmitting and receiving two parts, the transmitter LED, VCSEL, FPLD, DFBLD several light; receiver section includes a PIN and APD photodetector.

Features LED LightEmitting850 type of operating wavelength (nm), low-cost, general performance, can only be used for low-speed transmission around 100M, FPFabry-PerotLaser1310 general, performance is acceptable and can be used in distance high-speed transmission DFBDistribution-FeedbackLeaser1550 higher cost, can provide higher power for long distance transmission, VCSELVericalCavitySufaceEmittingLaser850 low production costs, short-range transmission for high-speed high, EMLElectro-AbsorptionModulatorwithLaser1310 costs, and the need to provide a higher voltage, but the transmission 100KM above from 1550 MZMach-ZenderModulator, with little complex process and the optical communications market increasingly competitive, communications devices require smaller and smaller, the interface board contains the interface increasing density. Laser and detector separation optical module has been difficult to adapt to the requirements of modern communications equipment. In order to adapt to the requirements of communications equipment, optical devices, optical modules are highly integrated small form factor. The highly integrated optical module so that users no need to deal with high-speed analog optical signal to shorten the R & D and production cycle, reducing the vitality of procurement categories, reduce production costs, so more and more favored by the equipment manufacturer.

At present, optical transceiver modules, optoelectronic devices, encapsulated by the larger size of the dual in-line form of the development of a coaxial package-based; optical interface structure ST, FC developed to the SC and the smaller size of the LC MT-RJ type connector form, the corresponding optical transceiver module package from the development of metal packaging to plastic packaging, by the separation of the single interface module to the dual interface transceiver module. Double row pin-and package-line by 20 feet, 16 feet separation module to a single row of 9 feet (1X9), double nine feet (2X9) and the double of 10 feet and double 20 foot transceiver module . The SFF (Small Form Factor) package optical modules using advanced precision optics and integrated circuit technology, size is only an ordinary duplex SC (1X9)-type optical transceiver module is half in the same space, doubling the number of optical ports can be increase the line port density, lower system cost per port. SFF package module using copper-based network similar to MT-RJ interface, the size of the common computer network copper interfaces, existing copper-based network equipment to the transition to higher speed fiber optic network to meet the rapid growth of network bandwidth requirements.

Small package optical transceiver module with its appearance of a small package that advantage, so that the optical interface of network equipment doubling the number of the rate of single-port Gigabit order of magnitude, and able to meet the rapid growth of the network bandwidth requirements of INTERNET era. It can be said that the small package optical transceiver module represents the trend of the development of a new generation of optical communication is the cornerstone of next-generation high-speed network. Abroad, the major optical module vendors have produced various for different rate and distance of the small package optical modules, some domestic suppliers of optical components also start R & D and production and the rate SFF transceiver module.

This information from FiberStore

2012年2月13日星期一

Fiber optic transceiver compatible brands

Today so many fiber optic products manufacture can produce the fiber optic transceiver compatible for many brands.such as cisco ,hp ,foundry, jumper, extreme,netgear,Force10.

Cisco compatible transceiver module support Ethernet, Sonet/SDH and Fibre Channel applications across all Cisco switching and routing platforms.Cisco compatible transceivers offer a convenient and cost effective solution for the adoption in data center, campus, metropolitan area access and ring networks, and storage area networks.

FiberStore supplys HP transceiver modules,all the HP transceivers are third party, and certified compatible for all HP switch and router product lines.

Foundry optical transceiver modules are hot swappable and meet the requirements to reduce hazardous substances (RoHS) standards. Foundry transceivers are reliable, high-performance modules. They are available as pre-owned, refurbished, new, or used - for more information, please call one of our sales representatives.

Go to FiberStore for more infotmation.

2012年1月9日星期一

X2 Optical Module Introduction

X2 is a standardized package of the 10G optical transponders .  X2 are available for  both versions  10G Ethernet and 10G Fibre Channel. X2 optical transponder is only applied to the data communication optical fiber connection (not used in the telecommunications transmission network), and their size is smaller than XENPAK optical transponder.Electrical interface of board is standardized, be knowed as XAUI (4X3.125Gb / s).

X2 optical modules is evolved from the standard of Xenpak, and its internal functional modules are same to Xenpak basically,  the circuit board applications are same too .that only need one optical module to achieve  10G Ethernet interface functions. As Xenpak optical modules put-on the board need to slot on the circuit board , so it will be  achieve  complex and can not achieve high density applications. improved  X2 optical modules ' size  only about half of  Xenpak, can be directly put on the board, so apply to high-density rack systems and PCI card applications.

X2 optical modules are available in two circuit interface: XAUI and Serial Framer Interface (SFI-4), which can be used for 10G Ethernet and  also can be used for OC-192 SDH and 10GFC. X2 compared to Xpak changes are mainly reflected in the rail system, the industry generally believe that the  two specifications will be integrated together finally.

keywords :Cisco X2-10GB-ER,   HP J8436A X2 Transceiver Module

2012年1月5日星期四

Cisco SFP-10G-SR transceiver

Cisco SFP-10G-SR is a SFP+ transceiver that support 10 g Ethernet . .This is the Hot-swappable input/output device that plugs into an Ethernet SFP+ port of a Cisco switch .
The SFP-10G-SR hot swappable SFP+ transceiver use LC connector interface, supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000 MHz*km MMF (OM3), up to 300m link lengths are possible. The SFP-10G-SR SFP+ modules are easy for deployment and maintenance, Rohs compliant and meet the IEEE standards for 10G Ethernet.

Brief that
• Product Type: SFP+
• Interfaces/Ports 1 x 10GBase-LR
• Interfaces/Ports Details: 1 x LC Duplex Connector 10GBase-LR
• Data Transfer Rate: 10Gbps Gigabit Ethernet
• Wavelength: 1310nm
• Transfer Distance: 10km
• Compatibility: Cisco switches and routers.

2012年1月3日星期二

Brief introduction of fiber optic transceiver

Fiber optical transceiver module is composed of optoelectronic devices,functional circuitry and optical interface etc.The optoelectronic devices include transceiver and receiving two parts.
Transceiver part is: input a certain rate of signal by the internal driver chip to drive the Semiconductor lasers(LD)or the light emitting diode(LED) emits the corresponding rate of modulated optical signal.And the transceiver part can make the power of output optical signal stability because of its internal light power automatic control circuit.
Receiving part is: after a certain rate of the optical signal inputed to the optical module,the optical signal will be converted to electrical signal by the optical detection Diode. Then output  the corresponding bit rate signal through the pre-amplifier. The output signal generally is PECL  power Level. While the input optical power  less than a certain value will output the awarning signal .
Classification of fiber optic transceiver
Divided by rate:
Ethernet applications 100Base, 1000Base (Gigabit), 10GE
SDH applications, 155M, 622M, 2.5G, 10G
According to package sub: 1 × 9, SFF, SFP, GBIC, XENPAK, XFP
1 × 9 package - welding optical module, the general rate is not higher than gigabit, multi-use SC connectors
SFF package - welding small package optical modules, generally no higher than gigabit speeds,use of LC interface
GBIC package - hot-swappable Gigabit Interface optical module, with SC Interface
SFP package - hot little package module, the highest data rate of up to 4G, LC interfaceto use more
XENPAK package - used in Gigabit Ethernet, using SC connectors
XFP package - 10G optical modules used in Gigabit Ethernet, SONET and others ystems, with  LC interface
According to the type of laser : LED, VCSEL, FP LD, DFB LD
Divided by the emission wavelength: 850nm, 1310nm, 1550nm, etc.
Divided according to use: Non-Hot Plug (1 × 9, SFF), hot-pluggable (GBIC, SFP, XENPAK, XFP)