Broad product selection and innovative technology have made Wiitek the optical module manufacturer of choice for all major networking equipment vendors worldwide. Wiitek has taken a leading role in transforming the data communications and telecommunications equipment markets from utilizing expensive discrete optical components to high-volume pluggable pay-asyou- grow optical modules.
Wiitek's optical communication products are compliant with standards including Ethernet, Fibre Channel, SONET/SDH and WDM and operate at data rates from 100 Mb/s to 100 Gb/s for datacenter, HPC (High-Performance Computing), access, metro-regional, wireless, and long haul networks. They feature outstanding performance over extended voltage and temperature ranges, while minimizing jitter, electromagnetic interference (EMI) and power dissipation.
Transceiver/Transponder Form Factors
CFP
The CFP is a hot-pluggable transceiver module form factor that supports a wide range of 40Gb/s and 100Gb/s applications such as 40G and 100G Ethernet, OC-768/STM-256, OTU3 and OTU4. Different versions of CFP modules can support various link distances over either multimode or single mode fiber optics. The CFP module includes numerous innovative features like advanced thermal management, EMI management and enhanced signal integrity design, as well as an MDIO-based management interface. Its electrical interface to the system host board is based on Nx10Gb/s, with the value of N depending on the application being supported.
CXP
The CXP is a hot-pluggable high-density parallel optics transceiver form factor which provides 12 channels of traffic in each direction (Tx and Rx). Current versions of the CXP module can handle up to 12.5Gb/s per channel, supporting applications such as 100G Ethernet, three 40G Ethernet channels and InfiniBand 12xQDR. Potential future CXP versions could support 14Gb/s and 25Gb/s per channel over multimode fiber optics. The CXP form factor provides the highest density and lowest power dissipation among all standardized pluggable form factors today, but it’s limited to short multimode links. Both transceiver modules and active optical cable versions are available in the market.
QSFP/QSFP+
The QSFP is a hot-pluggable high-density transceiver form factor which provides 4 channels of traffic in each direction (Tx and Rx). Initial versions of the QSFP module supported 2.5Gb/s and 5Gb/s per channel and were called “QSFP”. More recent versions called “QSFP+” support up to 10.5Gb/s per channel for applications such as 40G Ethernet and InfiniBand 4xQDR. Both multimode and single mode versions of the QSFP+ module are available in the market, as well as
QSFP-based active optical cables.
XFP
XFP is a standardized form factor for serial 10 Gb/s fiber optic transceivers. It is protocolindependent and fully compliant to the following standards: 10G Ethernet, 10G Fibre Channel, SONET OC-192 and SDH STM-64. XFP transceivers are used in datacom and telecom optical links and their benefits are a smaller footprint than other 10 Gb/s transponders (such as XENPAK, X2, XENPAK AND 300-PIN). The electrical interface to the host board is a standardized serial 10 Gb/s interface called XFI.

SFP and SFP+ (Small Form Factor Pluggable)
SFP and SFP+ transceivers are designed to be hot-swappable in industry-standard cages and connectors, and offer high-speed performance in a compact package. SFP was the first standardized form factor in this family, and has been used for data rates up to 4 Gb/s. With the need for compact transceivers at high data rates, an enhanced version named SFP+ was developed for applications up to 10 Gb/s and beyond. SFP+ transceivers are interchangeable with SFP transceivers and can be used in the same cages as SFP transceivers. For 10 Gb/s applications, SFP+ transceivers have a smaller footprint and lower power consumption than XFP transceivers. The electrical interface to the host board for SFP and SFP+ modules is a serial interface.
SFF (Small Form Factor)
Small form factor, or SFF, transceivers are designed for a range of data rates up to 4 Gb/s and offer physical compactness and pin-thru hole soldering onto a host board. They are available in several configurations including industry standard 2x5 / 2x10, and de-facto 2x6 and 2x7 pinouts.
Active Optical Cables
Wiitek has active cables for different applications, including Laserwire,® a 10G serial active cable for distances up to 30 meters, Quadwire,® a 40G parallel active cable for distances up to 100 meters, and C.wire,® a 150G parallel active cable for distances up to 300 meters. These cables include optics imbedded inside the cable assembly, which has many significant advantages for datacenter applications, including:
 Elimination of expensive connectorization of fiber optic cables.
 Cost optimization through component matching and test margin elimination.
 Elimination of dirt/dust issues common to existing fiber assemblies.
In addition, active optical cables are capable of longer reach, lower EMI, lower power dissipation and are significantly lower in weight and less bulky than competing copper solutions.
GBIC (Gigabit Interface Converter)
The gigabit interface converter, or GBIC, was the original hot-swappable standardized form factor. The GBIC has been widely adopted in a large number of legacy systems, with designs ranging in data rates up to 2.5 Gb/s.
SNAP12
SNAP12 Transmitter and Receiver modules are fiber optic modules for parallel optical data communication applications. These modules are compliant to the SNAP12 MSA and are primarily used for intra-chassis connections. These 12-channel devices are for short-reach applications and are designed to operate on multimode fiber systems at a nominal wavelength of 850 nm.
300 PIN
300 PIN is a standardized fiber pigtailed form factor for 10 and 40 Gb/s fiber optic transponders. For 10 Gb/s applications, SONET OC-192, SDH STM-64 and DWDM (including tunable) versions are available. For 40 Gb/s applications, SONET OC-768/SDH STM-256 as well as DWDM tunable OTU3/OTU3e versions based on advanced phase modulation formats are available. 300 PIN modules are used primarily in telecom and DWDM optical links. The electrical interface to the host board is a 16-lane bus.
XAUI
XENPAK, X2, and XENPAK are standardized form factors for 10 Gb/s fiber optics transponders. Both 10G Ethernet and 10G Fibre Channel versions are available. XENPAK, X2, and XENPAK transponders are used in datacom optical links. The electrical interface to the host board is also standardized and is called XAUI (4 x 3.125 Gb/s).