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Learn Some about CWDM SFP Transceivers

Learn Some about CWDM SFP Transceivers

As we know, CWDM SFP (CWDM) is on the SFP transceivers or socket switch or router port, it is a kind of technology of hybrid protocols and data rate, allow the multi-channel, combination, and through the optical fiber cable transmission.

CWDM SFP use SFP interfaces to connect devices, at the same time, double LC/PC type optical fiber connector software, optical network connection.CWDM SFP for port connected to the optical fiber network, the typical CWDM SFP as cisco can support gigabit Ethernet and fiber channel at the same time. It is compatible SFP with fast Ethernet, SONET OC – 3 and OC – 12, and STM and SDH STM – 1-4 standard.

The purpose of CWDM SFP transceivers basic characteristics are hot pluggable and double LC interface, and compliant with IEC60825-. The transmitter center wavelength ranges from 1270nm to 1610nm and the receiver PIN or APD is single +3.3V power supply, PECL data interface; Operating temperature range s from -5 to + 70 degrees;

CWDM SFP transceivers consists of three parts: an uncooled CWDM DFB laser, PIN photodiode integrates a trans resistance preamplifier (TIA) and single-chip microcomputer control unit. This optical transceiver integration in a module to send and receive channel. In the sender, serial data stream is transmitted to the the laser driver. Laser driver bias and modulation of refrigeration directly modulated laser (DML), according to the LC connector industry standard, make the data transmission of single-mode fiber. At the receiving end, the data flow from a PIN or restore the avalanche photodetector (APD), transmitted to trans resistance amplifiers, rear and then passed to the amplifier.The module has to be hot-swappable SFI standards for electrical interfaces. This integrated optical transceiver to provide signal transmission rate from 100 Mbps to 3.1 Gbps of high-speed serial link and the module in line with the small pluggable (SFP) multi-source agreement (MSA).

We know that typical CWDM SFP transceivers including CWDM-SFP-1470, CWDM-SFP-1490, CWDM-SFP-1510, CWDM-SFP-1530, CWDM-SFP-1550, CWDM-SFP-1570, CWDM-SFP-1590, CWDM-SFP-1610. Cisco CWDM SFP is a series of single-mode transceiver covers from 1470nm to 1610 nm wavelength applications, they are different colors to identify them, these CWDM SFP to gigabit Ethernet and 1/2 GBPS fiber channel applications. And another brand is Juniper CWDM SFP, it includis SFP-1GE-LH-CWDM-1270, SFP-1GE-LH-CWDM-1290, SFP-1GE-LH-CWDM-1310, SFP-1GE-LH-CWDM-1330, SFP-1GE-LH-CWDM-1350. The Cisco SFP transceiver and Juniper CWDM SFP transceivers are with excellent quality. Casting CWDM SFP transceivers work on the 80 km, with different wavelengths from 1470 nm to 1610 nm. It is fully compatible with and in its intended functions casting router or switch, and complete the MSA compatible.

CWDM SFP Transceiver

Cisco’s may possibly aim at either Gigabit Ethernet or Fiber Channel. Fiberstore supply original CWDM SFP, along with other CWDM SFP transceivers, impressive company like cisco, HP, huawei, juniper networks and etc. Fiberstore, as a famous optical fiber manufacturers, provide many other kinds of fiber optic transceivers like SFP transceivers, GBIC transceiver, CWDM SFP transceivers, DWDM SFP transceivers, SGMII SFP transceivers, SFP+ transceivers, XFP transceiver, X2 transceiver, Xenpak transceiver, and so on. In addition, Fiberstore is making with 30% of the price including all SFP transceivers. So if you want to know more and take action for it immediately. The website is

FiberStore Provides a Complete Range of SFP+ Transceivers

FiberStore Provides a Complete Range of SFP+ Transceivers

FiberStore provides various kinds of optical communication products which are compliant with standards including Fast Ethernet (FE), Gigabit Ethernet (GE), 10 Gigabit Ethernet (10GbE), Fibre Channel (FC), SONET/SDH and WDM and operate at data rates from 100M to 100G for data-center, HPC (High-Performance Computing), access, metro-regional, wireless, and long haul net-works. They feature outstanding performance over extended voltage and temperature ranges, while minimizing jitter, elzectromagnetic interference (EMI) and power dissipation. For example, the SFP+ transceiver is one of them.

SFP+ (enhanced small form-factor pluggable) is a standardized form factor for fiber optic transceivers and is used in datacom and telecom optical links, offering a smaller footprint and lower power consumption than XFP transceivers for 10G applications. SFP+ transceivers are designed to be hot-swappable in industry-standard cages andconnectors, and offer high-speed performance in a compact package. As known that SFP was the first standardized form factor in this family, and has been used for data rates up to 4G. Then, with the need forcompact transceivers at high data rates, an enhanced version named SFP+ was developed for applications up to 10G and beyond. SFP+ transceivers are interchangeable with SFP transceivers and can be used in the same cages as SFP transceivers because of their same shape as SFP modules. What’s more, the electrical interface to the host board for SFP and SFP+ modules is a serial interface.


SFP+ transceivers’ initial standard applications focused on 8G FC, 10GbE and 10G FC, where the electrical interface to the host board is a standardized serial interface called SFI. Then, the applications have expanded to include SONET OC-192, SDH STM-64, OTN G.709, CPRI wireless, 16G FC, and the emerging 32G FC application.


SFP+ comes in 4 different versions: SR, LR, ER and ZR. Apart from the regular 10G SFP+ transceivers, FiberStore also provides the whole CWDM/DWDM spectrum for 10G SFP+. The SFP+ is also available as a BIDI optic, which has only one LC plus and will work on one single strand of single-mode fiber (SMF). SFP+ modules come with digital diagnostics monitoring (DDM) functions, which provide network managers with a highly accurate, cost-effective tool for implementing reliable performance monitoring. Let’s talk about the kinds of our SFP+ transceivers.


According to the brands, our SFP+ transceivers are divided into two big parts: compatible SFP+ and custom SFP+. FiberStore manufactures a complete range of compatible SFP+ transceivers, such as SFP+ SR, SFP+ LR, SFP+ LRM, SFP+ ER, SFP+ ZR, CWDM SFP+, DWDM SFP+, BiDi SFP+, and compatible Cisco SFP+, HP SFP+, Juniper SFP+, Netgear SFP+ etc.. The custom SFP+ transceivers can be any type up to the customers’ requirements and own the brand labeling of FiberStore.

According the different parameters and applications, our SFP+ transceivers include regular 10G SFP+, 8G SFP+, CWDM SFP+, DWDM SFP+, BIDI SFP+, 16G SFP+, Dual-Rate 1/10G SFP+ and SDH/SONET SFP+. Here are some features of them.

Regular 10G SFP+
Regular 10G SFP+ transceivers are multi-purpose optical modules for 10G data transmission applications at 850nm, 1310nm and 1550nm. The transfer distances include 220 m, 300 m, 2 km, 10 km, 20 km, 40 km, 80 km and 100 km. And there are both multi-mode and single-mode versions.


  • Operating data rate up to 10.3 Gbps
  • 850nm/1310nm/1550nm VCSEL Transmitter
  • Average Output Power: -6 ~ -1 dBm
  • Receiver Sensitivity: -11.1 dBm
  • Distance up to 220 m ~ 100 km (MMF or SMF)
  • Single 3.3V Power supply and TTL Logic Interface
  • Duplex LC Connector Interface, Hot Pluggable
  • Compliant with MSA SFP+ Specification SFF-8431
  • Compliant with IEEE 802.3ae 10GBASE
  • Power Dissipation < 1.0 W
  • Dispersion tolerance up to 40 ps/nm over G.651
  • Built-in Digital Diagnostic Function

8G SFP+ transceivers are designed for the 8G FC optical data communications. These modules meet the requirements of the IEEE 802.3 GE standard and ANSI FC specifications, and are suitable for interconnections in GE and FC environments. Digital diagnostic functions are available via an I2C series bus specified in the SFP MSA SFF-8472.


  • Operating data rate up to 8.5 Gbps
  • 1310nm DFB-LD Transmitter
  • Average output power: -8 to 0 dBm
  • Receiver sensitivity: -15 dBm
  • Distance up to: 300m to 80 km
  • Single 3.3V power supply and TTL logic interface
  • Duplex LC connector interface, Hot-pluggable
  • Compliant with MSA SFP+ specification SFF-8431
  • Compliant with 8.5G FC-PI-4 800-SM-LC-L FC standard
  • Built-in digital diagnostic function

CWDM SFP+ transceivers are designed for bi-directional (BIDI) serial optical data communications such as IEEE 802.3ae 10GBASE-LR/LW/ER. CWDM 10G SFP+ transceiver is with the SFP 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. CWDM 10Gig SFP+ module is designed for single mode fiber and operates at a nominal wavelength of CWDM wavelength. Our CWDM SFP+ transceivers are 18 center wavelengths available from 1270 nm to 1610 nm, with each step 20 nm. A guaranteed minimum optical link budget of 14 dB is offered.


  • Operating data rate up to: 9.95 Gbps to 11.1 Gbps
  • Hot-Pluggable SFP+ footprint
  • Average output power: -5 to 0 dBm
  • Receiver sensitivity: -15 dBm
  • 18 wavelength CWDM DFB transmitter from 1270nm to 1610nm, with step 20nm
  • 10 dB power budget at least
  • Duplex LC connector
  • Power dissipation < 1.2 W
  • Compliant with SFP+ MSA specification SFF-8431
  • Build-in digital diagnostic functions
  • Compliant with SFF-8472 MSA
  • Case operation temperature range 0 ℃ to 70 ℃

DWDM SFP+ transceivers are specifically designed for carriers and large enterprises that require a scalable, flexible, cost-effective system for multiplexing, transporting and protecting high-speed data, storage, voice and video applications in point-to-point, add/drop, ring, mesh and star network topologies. As the DWDM technology enables service providers to accommodate many hundreds of aggregated services of any sub-rate protocol without installing additional dark fiber, DWDM SFP+ transceiver is therefore the choice for the highest-bandwidth applications, such as 10GbE, 4G FC, 40G and 100G in the future.


  • Available in all C-Band wavelengths on the 100GHz/50GHz DWDM ITU Grid
  • Temperature-stabilized DWDM EML transmitter
  • Duplex LC connector
  • Power dissipation: < 1.5 W
  • Dispersion tolerance from -300 ps/nm to 800 ps/nm
  • Hot-pluggable SFP+ footprint
  • Compliant with SFF-8431 MSA
  • Compliant with SFF-8432 MSA
  • Operating case temperature standard : 0 ℃ to 70 ℃
  • Built-in digital diagnostic function
  • Average output power: -1 to 4 dBm
  • Receiver sensitivity: -15 dBm

BiDi SFP+ are designed for bi-directional 10G serial optical data communications such as IEEE 802.3ae 10GBASE-BX by using 1330(1270)nm transmitter and 1270(1330)nm receiver. The transceiver consists of two sections: The transmitter section uses a multiple quantum well 1330(1270) nm DFB laser and is a class 1 laser compliant according to International Safety Standard IEC 60825. The receiver section uses an integrated 1270(1330) nm detector preamplifier (IDP) mounted in an optical header and a limit. Our BIDI SFP+ modules are fully compatible with original products, and are available in various distances from 10Km up to 60Km.


  • Operating data rate up to 10.3 Gbps
  • 1270nm/1330nm DFB Transmitter/Receiver
  • Power budget 9 dB at least
  • Single 3.3V power supply and TTL logic interface
  • LC connector interface
  • Hot-pluggable
  • Power dissipation: < 1.5 W
  • Operating case temperature standard : 0 ℃ to 70 ℃
  • Average output power: -5 to 0 dBm
  • Receiver sensitivity: -14 dBm
  • Compliant with SFP+ MSA specification SFF-8431
  • Compliant with IEEE 802.3ae 10GBASE-LR
  • Compliant with IEEE 802.3ae 10GBASE-LW
  • Built-in digital diagnostic function

16G SFP+
16G SFP+ are designed for the 16G FC optical data communications. This FC transceiver solution supports high-speed serial links over multimode optical fiber at signaling rates up to 14.025 Gbps. Using the 2-wire serial interface defined in the SFF-8472 MSA, the 16G FC transceivers provide real-time temperature, supply voltage, laser bias current, laser average output power and received input power. Compliant with SFP MSA mechanical and electrical specifications for LC Duplex transceivers, ANSI FC transceivers can be also used for FC-PI-5 and FC-PI-2 gigabit applications.


  • Distance up to: 125 m to 10km at 850nm/1310nm transmitter
  • Compliant to RoHS directive
  • Diagnostic features per SFF-8472
  • Real time monitoring of: Transmitted/Received optical power; Laser bias current; Temperature; Supply voltage
  • SFP Plus Mechanical form factor
  • Wide temperature and supply voltage operation (0 ℃ to 70 ℃) (3.3 V ± 5%)
  • Transceiver specifications per SFP (SFF-8074i) MSA and SFF-8472 (revision 10.0)
  • 14.025 Gbps FC operation for FC-PI-5 1600 M5E-SN-I, FC-PI-5 1600-M5E-SN-I, FC-PI-5 1600 M5F-SN-I
  • 8.5 Gbps FC operation for FC-PI-4 800-M5-SN-S, 800-M6-SN-S and 800-M5E-SN-I
  • 4.25 Gbps FC operation for FC-PI400-M5-SN-I , 400-M6-SN-I and 400 M5E-SN-I
  • LC duplex optical connector interface conforming to ANSI TIA/EIA604-10 (FOCIS 10A)
  • IEC 60825-1 Class 1/CDRH Class 1 laser eye safe
  • Enhanced EMI performance for high port density applications

Dual-Rate 1/10G SFP+
Dual-rate 1/10G SFP+ transceivers are designed for use in GE and 10GbE links over SM or MM fiber. They are compliant with SFF-8431, IEEE 802.3-2005 10GBASE-SR/SW, 10GBASE-LR and 1000BASE-SX, 1000BASE-LX. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472. Host board designers should follow the IC manufacturer’s recommended settings for interoperability with an SFP+ limiting module. This product is for applications specifically designed for 10G SFP+ ports and 1G/10G SFP+ ports and not native 1G SFP ports.


  • Hot-pluggable SFP+ footprint
  • Supports rate selectable 1.25 Gbps, 9.95 Gbps and 10.3 Gbps
  • Power dissipation: < 1 W
  • RoHS-6 compliant (lead-free)
  • Commercial temperature range: 0 ℃ to 70 ℃
  • Single 3.3Vpower supply
  • Uncooled 850nm/1310nm VCSEL laser
  • Duplex LC connector
  • Built-in digital diagnostic functions

SDH/SONET SFP+ transceiver is a high performance, cost effective module for serial optical data communications applications specified for signal rates of 9.95 Gbps to 11.3 Gbps. These modules are designed for single mode fiber and operates at a nominal wavelength of 850/1310/1550 nm. The transmitter section incorporates uncooled directly modulated 1310nm distributed feedback laser (DFB) or EML colled laser 1550nm. The receiver section uses PIN photodetector for low dark current and excellent responsivity or APD high sensetivity receiver.


  • Supports 9.95 Gbps to 11.3 Gbps
  • Average output power: -6 to -1 dBm
  • Receiver Sensitivity: -14.4 dBm
  • SFP 10G with CDR both at TX and RX side
  • IEC 60825-1 Class 1/CDRH Class 1 laser eye safety
  • Hot-pluggable SFP+ footprint
  • 10 km at 1310nm DFB/PIN transmitter
  • Duplex LC connector
  • Low power dissipation
  • Superior Thermal and EMI integrity performance to support high port densities
  • LC duplex optical connector interface conforming to ANSI TIA/EIA604-10 (FOCIS 10)
  • Built-in digital diagnostic functions, DDMI
  • RoHS-6, CE, FDA, FCC, TUV, UL certifactes

SFP Optical Transceiver Modules

SFP Optical Transceiver Modules

SFP package – hot little package module, the highest rate of up to 10G, is mostly used with LC interfaces. SFP is abbreviation of Small Form Pluggable, which can be simply considered as an upgraded version of GBIC. SFP module has half volume of GBIC, only the size of a thumb. It can be configured on the same panel, more than double the number of ports. SFP module has the same other basic functions as GBIC. Some switch vendors said the SFP module is mini GBIC.

SFP modules through the CDR and electronic dispersion compensation on the outside of the module, while the more reduced the size and power consumption. They are used for telecommunications and data communications applications in optical communication. SFP connected network devices such as switches, routers and other equipment motherboards and optical fiber or UTP cables. SFP is also a kind of industry specifications which some fiber optic device providers support. SFP modules support SONET, Gigabit Ethernet, Fiber Channel as well as some other communication standards. This standard extends to SFP+, which can support 10.0 Gbit/s transfer rate, including 8 gigabit Fiber Channel and 10GbE. The introduction of fiber optic and copper versions of the SFP+ module versions, and the module’s XENPAK, X2 or XFP version comparison, SFP+ module will remain in the part of the circuit board to achieve, rather than the module implementation.

SFP transceivers have many different types of transmission and reception, the user can select the appropriate link for each transceiver to provide based on available fiber types (such as multi-mode fiber or single-mode fiber) can reach the optical performance. Available optical SFP modules are generally divided into the following categories: 850nm / 550m distance MMF (SX), 1310nm wavelength / 10 kilometers from the SMF (LX), 1550nm / 40 km distance XD, 80 miles from the ZX, 120 yards from the EX or EZX, and DWDM. SFP transceivers are also available copper interfaces, making the design primarily for fiber optic communication devices are also able to host UTP network cable communication. There are also CWDM SFP and single-fiber “two-way” SFP.

SFP optical module configuration are: lasers (including transmitter TOSA with the receiver ROSA) and board composition IC and external accessories and external accessories, there are housing, base, PCBA, pull ring, clasps, unlock, rubber stopper composition, In order to facilitate the identification generally pull ring color discrimination module parameter type.

In accordance with the rate divided 155M/622M/1.25G/2.125G/4.25G/8G/10G, 155M and 1.25G market is used more, 10G technology is maturing, demand is rising attitude to development. In accordance with the wavelength divided 850nm/1310nm/1550nm/1490nm/1530nm/1610nm, the SFP 850nm wavelength multimode transmission distance 2KM below 1310/1550nm wavelengths for single mode, the transmission distance 2KM above, relatively speaking, this three wavelengths price is cheaper than the other three.

Many people do not know the difference between SFP and SFP+. This sometimes caused unnecessary trouble. 10G module has gone from 300Pin, XENPAK, X2, XFP development, and ultimately with the same size and SFP 10G transmission signal, which is the SFP+. SFP with its compact low cost advantages to meet the equipment needs of high-density optical modules, implemented from 2002 standard to 2010 has replaced 10G XFP and become the mainstream of market.

SFP+ optical modules have these following advantages. First, SFP+ package has the more compact dimensions than than XFP X2 (with the same size as SFP). Second, SFP+ optical modules can be direct connected with XFP, X2 and XENPAK modules which have the same types. Third, the cost ratio is lower than XFP, X2 and XENPAK products.

FiberStore offers cost-effective standards-based compatible Cisco SFP Transceivers. As a 3rd party OEM manufacturer, our Cisco SFP transceiver is delivered to worldwide from our factory directly.

Source: FiberStore

Basic Common Sense Resolution of Fiber Optic Transceivers

Basic Common Sense Resolution of Fiber Optic Transceivers

Fiber optic transceiver is an indispensable network data transmission equipment. What is fiber optic transceiver? What is the structure of fiber optic transceivers? What is the role of fiber optic transceivers in the data dissemination process?

Fiber optic transceiver includes three basic functional modules: optical media converter chip, the optical signal interface (optical transceiver module) and the electrical signal interface (RJ45), with network management functions include network management information processing unit.

Fiber optic transceiver is a short distance twisted pair electrical signals and optical signals over long distances to swap the Ethernet transmission media conversion unit, in many places, also known as Fiber Converter. Products in generic applications can not be covered in the Ethernet cable, you must use the fiber to extend the transmission distance of the actual network environment, and is usually located in the broadband metropolitan area network access layer applications; in helping the fiber last mile connections to the metro also played a huge role in the network and the outer layer of the network.

Used directly in some of the larger companies, network construction fiber-optic backbone network established for the transmission medium, the internal LAN transmission medium is usually copper. How to implement LAN and connected to the fiber optic backbone? This requires different ports, different linear, convert between different fiber and ensure the quality of the link. The emergence of fiber optic transceivers, conversion between twisted pair electrical signals and optical signals to ensure the smooth transmission of data packets between two networks at the same time it will network transmission distance limit extended to more than 100 kilometers from the copper wire 100 meters ( single-mode fiber).

What are the basic features of fiber optic transceiver:

1. It is completely transparent to the network protocol.

2. Ultra low-latency data transmission.

3. It supports a wide operating temperature range.

4. Using a dedicated ASIC chip data wire-speed forwarding. The programmable ASIC will focus on the multiple functions onto a single chip, has the advantages of simple design, high reliability, low power consumption, enabling the machine to get higher performance and lower cost.

5. Network management equipment to provide network diagnostics, upgrades, status reports, exception reports and control functions, provide a complete operation log and alarm log.

6. Rack equipment can provide hot-swap function, ease of maintenance and uninterrupted upgrade.

7. Support a full range of transmission distance (from 0 to 120 km).

8. Equipment 1 +1 power supply design, support for ultra-wide supply voltage, power protection and automatic switching.

Fiber transceiver classification:

There are many types of fiber optic transceivers. In WDM system, for example, there are CWDM and DWDM transceivers including CWDM SFP, DWDM SFP, CWDM SFP+, DWDM SFP+, CWDM GBIC, CWDM XFP, DWDM XFP, CWDM X2, DWDM X2, CWDM XENPAK, and DWDM XENPAK.

FiberStore provides a full range of optical transceivers, such as SFP+ (SFP Plus) transceiver, X2 transceiver, XENPAK transceiver, XFP transceiver, SFP (Mini GBIC) transceiver, GBIC transceiver, CWDM/DWDM transceiver, and PON transceiver. All our fiber transceivers are 100% compatible with major brands like Cisco, HP, Juniper, Nortel, Force10, D-link, 3Com. They are backed by a lifetime warranty, and you can buy with confidence. We also can customize optical transceivers to fit your specific requirements.