OC-3 also known as STS-3 (electrical level) and STM-1 (SDH)， is a network line with transmission speeds of up to 155.52Mbit/s with optical fibers. OC-3 SFP modules are often used for Fast Ethernet, SDH/SONET and FTTx applications.

OC3 SFP (Small Form Factor Pluggable) module is specifically designed for the high performance integrated duplex data link over single mode optical fiber. These transceiver modules are compliant with the SFP Multisource Agreement (MSA). With the hot pluggability, these modules offer an easy way to be installed into SFP MSA compliant ports at any time without the interruption of the host equipments operating online.

Ingellen is a leading supplier of wide ranges of STM-1 SFP modules, all of our oc3 stm1 SFP transceivers can be manufactured to be complete compatible with major brands Cisco, Juniper, Hp, Dell, Alcatel ect., Ingellen can customize your required compatible OC3 SFP transceivers like Cisco OC3 SFP transceivers to fit for you special applications. Next I will introduce some major custom Cisco OC3 SFP transceivers that are available from us:

SFP-OC3-MM：
Description: OC-3/STM-1 pluggable short-reach (2 km) transceiver module, 1310-nm wavelength, MMF, LC connector
SFP-OC3-SR：
Description: OC-3/STM-1 pluggable short-reach (2 km) transceiver module, 1310-nm wavelength, LC connector
SFP-OC3-IR1：
Description: OC-3/STM-1 pluggable intermediate-reach (15 km) transceiver module, 1310-nm wavelength, LC connector
SFP-OC3-LR1：
Description: OC-3/STM-1 pluggable long-reach (40 km) transceiver module, 1310-nm wavelength, LC connector
SFP-OC3-LR2：
Description: OC-3/STM-1 pluggable long-reach (80 km) transceiver module, 1550-nm wavelength, LC connector

SFP-OC3-MM and SFP-OC3-SR are for Gigabit Ethernet and SONET/OC3 applications while SFP-OC3-IR1, SFP-OC3-LR1, SFP-OC3-LR2 are for SDH STM-1, I-1.1, SONET OC-3 SR1, Fast Ethernet, Other Optical Links applications.

OC-3 SFP Transceiver Platform Support and Minimum Software Release Requirements:
SPA-2XOC3-POS, SPA-4XOC3-POS, SPA-4XOC3-POS-V2, SPA-8XOC3-POS, SPA-1XOC3-ATM-V2, SPA-1XOC3-ATM-V2, SPA-3XOC3-ATM-V2, SPA-4XOC3-ATM
SPA software support is determined by the platform on which the SPA is installed. Refer to the SPA release notes for the correct software release.

Ingellen provide custom service for other Cisco compatible SFP transceivers with the required specifications provided like GLC-SX-MM, GLC-LH-SM, GLC-ZX-SM etc. All of transceivers are fully tested before shipping to you and they are guaranteed to be totally compatible with all Cisco series switches and modules that support SFP transceivers. Enjoy you journey at www.ingellen.com or contact [email protected] or 86-755-8326 9350 for more detailed product or service information.

 The simplest couplers are fiber optic splitters. The fiber optic splitter, also called beam splitter, is used to split a fiber optic beam into several beams at a certain splitting ratio. A fiber-optic splitter is a device that takes a single fiber optics signal and divides it into multiple signals. Fiber optic splitter is one of the key components in FTTH. Fiber optic splitters can be terminated with different kinds of connectors, the main package could be box type or stainless tube type, one is usually used with 2mm or 3mm outer diameter cable, the other is usually used with 0.9mm outer diameter cables. Based on working wavelength difference there are single window and dual window fiber optic splitters. And there are single mode fiber splitter and multimode fiber splitters. Typical connectors installed on the fiber optic splitters are FC or SC type.

Fiber Optic Splitter Features:

Single Mode, multimode, and PM fiber types;
Multiple port configurations, custom length and cable diameters;
Various splitting ratios, 50:50 to 1:99;
Tube type or Box type, PLC fiber optic splitters or Fused fiber optic splitters;
PC, UPC, and APC fibre optic connectors;
Available with FC, SC, ST, LC, and MU connectors.

Single window fiber optic splitter is with one working wavelength, dual window fiber optic splitter is with two working wavelength. For multimode fiber, the term means that the fiber is optimized for 850 nm and 1310 nm operation. For single-mode fibers, the term means that the fiber is optimized for 1310 nm and 1550 nm operation. For single window fiber optic splitter, its working wavelength usually is one of the above said wavelength.

Depend on the technology used, there are FBT (Fused biconical taper) splitter and PLC (Planar Lightwave Circuit) fiber splitter. FBT splitter is a traditional type with over 20 years history, it is a mature products. It is low cost and easy to make, but fused fiber optic splitters optical loss are sensitive to wavelength and this is big disadvantages. The PLC Splitters are developed based on silica glass wave-guide process with reliable precision aligned fiber pigtail. PLC fiber optic splitters are small size and wide working wavelength, they are more reliable, suitable to use in passive optical network fiber optic splitting.

Major differences between PLC splitters and FBT splitter
1. Technology behind FBT Splitter and PLC splitter.
FBT splitter: Fused biconical taper, this is traditional technology to weld several fiber together from side of the fiber.
PLC splitter: Planar waveguide is a micro-optical components product, using lithography, the semiconductor substrate in the medium or the formation of optical waveguide, to achieve branch distribution function.

2. Disadvantages and advantages between FBT and PLC.

We supply both FBT splitter and fiber PLC splitter, with SC, FC, LC, ST, UPC, APC,PC,etc connectrors. single window, dual window,fiber optic couplers.

 Low smoke zero halogen (LSZH or LSOH) is a material classification typically used for cable jacketing in the wire and cable industry. LSZH cable jacketing is composed of thermoplastic or thermoset compounds that emit limited smoke and no halogens when exposed to high sources of heat (ie. flame).

Most network cables are insulated with polyethylene, PVC or Thermoplastic Urethane (TPU) . In fires, a halogen-containing plastic material releases hydrogen chloride, a poisonous gas, which forms hydrochloric acid when it comes in contact with water. Designated Halogen-free cables, on the other hand, does not produce a dangerous gas/acid combination or toxic smoke when exposed to a flame. Low smoke zero halogen cable reduces the amount of toxic and corrosive gases emitted during combustion. These types of materials are typically used in poorly ventilated areas such as aircraft or rail cars. Low smoke zero halogen is becoming very popular and in some cases a requirement in instances where the protection of people and equipment from toxic and corrosive gasses is critical.

Fires on board vessels can produce toxic gases and heavy smoke. Our marine low smoke, zero halogen cable can minimize the effects from these dangers. Save lives, protect your equipment from damage, and meet specifications that require use of LSZH cable. This cable is a low-cost alternative to the military spec cable often used in commercial applications.

Low Smoke Zero Halogen (LSZH) cables or low smoke & fume (LSF) cables is used in applications such as Central Offices, Mass Transit Rail Systems, Nuclear Plants and Oil Refineries or in any other application where the protection of people and equipment from toxic and corrosive gasses is critical. Low Smoke Zero Halogen cable is often lighter, so overall cable network system weights can be reduced and the environmental impact of halogen free cabling can be lower if there are fewer toxic chemicals.

In summary, the LSZH cable has four ascendant performance, as follows:

Superior overall performance of the one: On environmental cracking phenomenon. Products in use when cracking occurred, seriously affect the service life of the cable. The environmental cracking phenomenon is a complex issue affected by many factors. Generally that is closely related to the causes and products processed LSZH sheath of residual stress, phase interface debonding and resin hardening and embrittlement. Fiber optic manufacturer Ingellen supplies breaking elongation of greater than 200% and extraordinary aging properties to overcome this phenomenon provides a useful. Superior overall performance of the two: The outstanding thermal deformation properties the hold when heated smallest nature of the thermal deformation undoubtedly has its value in use. Under conditions of heat stress experiments show that up to 90 ° C or 100 ° C standard. Moreover, in the not pressed condition under the heat deformation properties are more prominent. Free Hanging conditions such as 120 ° C after 240 hours the same, while a large number of similar products mud off and was soon heat only 3-4 hours. Superior overall performance of the three: High flame retardant Low Yat smoke performance to meet IEC 1034 standard.

Superior overall performance of the four: Available for different user to select a wide range of rheological properties.

 SFP plus small form factor pulggable is a hot-pluggable transceiver used for telecommunication. SFP plus is an upgraded version of the former SFP transceivers (MINI GBIC). SFP plus, with higher data rate and new industrial standards, targets at the application of 10Gbps Ethernet and 8.5Gbps Fibre channel. SFP+ ensures the 10Gbps data transmission and the most densely installation capability as well as the lowest cost, currently it is well acknowledged as the ultimate choice for the 10Gbps fiber optic transceivers.

SFP+ is smaller than any of the currently shipping form factors and provides the highest density per line card. The SFP+ transceivers are ideally suited for datacom and storage area network (SAN/NAS) applications based on the IEEE 802.3ae and Fibre Channel standards, Fiber Channel 10G, 8.5G, 4.25G, 2.125G, 1.0625G, 10G BASE-SW/SR/LR/ER, 1000 Base-SX Ethernet. Our SFP plus transceivers are fully compliant with the SFP+ MSA.

10G SFP+ Module transceivers are used for high speed 10Gigabit Ethernet, linking the equipment to fiber optic networks. Several industrial acknowledged standards for SFP plus has been made for 10Gpbs networks. Typical products are the Cisco SFP 10G SR and Cisco SFP 10G LR, both transceivers are fiber optic type, SR SFP+ defines the SFP plus transceiver working with OM3 10G multimode fiber at 30 to 300 meters range, LR SFP+ defines the SFP plus transceiver working with single mode fiber at 10km range, SR SFP+ bear beige color with max 300 meters working distance. 10Gbase-LRM which defines the FDDI multimode fiber at around 220 meters range.

Ingellen has a large selection of SFP+ transceivers, such as SFP+ MM 300m, SFP+ 10km, SFP+ 20km, SFP+ 40km, CWDM SFP+, DWDM SFP+, BiDi SFP+, and series of Compatible Brands such as Cisco compatible, Juniper Compatible, HP compatible, Dell compatible SFP plus transceivers. SFP+ transceivers that are fully compatible with industrial standards, they feature good price and excellent performance.

Our Cisco SFP+ equivalents are equal performance but much more competitive prices. We have these products in stock for immediate delivery for small quantity requirement, even for big quantity the delivery could be fast.

 The component is part of small-scale, machine and instrument, itself usual is composed of several members, and can be used in the same series products; we general refers to electrical, radio, meter and some parts of the industry etc. Certainly component is divided to passive component and active component. Next, I would like to talk about their different from several aspect.

Follow the definition
The passive components are electronic elements that can display the characteristics without the need for external power case.The active component is also a electronic element, when it is operating and have power source in it, it called active component.
Follow the circuit nature
The passive component has two basic features: 1)itself or consume the electricity, or take the electricity transform a different energy. 2) just need to input signal, it works without need to external power source. The active component has also two basic features: 1) itself can also consume the electricity. 2) except input signal, if you want to works and have to external power source.
Follow the product
The passive component has resistor, resistor network, capacitor, inductor, tansformer, relay, key, speaker, switch, connector, socket, line, pcb and so on. Passive components are primarily resistance class inductor class, and capacitor element. The active component has Diode, Light-emitting diodes, thyristors, Transistor, IC, operation amplifier, comparator, flip－flop, counter, digital signal processor, dsp and so on.
Follow the functions
The passive components effect can be summed up that to connect the optical waveguide or optical path; control light propagation direction; to control the distribution of optical power; control between optical waveguide between the device and the optical coupling between the waveguide and the device; combined wave and the partial wave and so on.

The active components effect primarily a front-end equipment, the transmission network of the amplifier, over current splitter, feeding electric amplifier and the optical transmitter, a receiver, etc.. While the amplifier is the access network used, the most widely used active devices, it is the role when the television signal transmitted from the cable after a certain distance, due to a transmission attenuation characteristics of the cable, so that the television signal more Lei lower, when the low to a predetermined level, must be coupled with an amplifier, amplifies the signal and then down transmission. Play a the signal amplifying role and purpose of long-distance transmission of a television signal. In short all oscillation, amplification, modulation, demodulation, and current transformation active components are inseparable.

Thus, active devices and passive components on the circuit conditions require the work of a completely different way. Passive and active concept not only in electrical components, this concept both in the fields of mechanical, fluid, thermal, acoustic.