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04 Nov 2015

1000BASE-LX/LH Optical Interface Specifications

The 1000BASE-LX, 1000BASE-LH and 1000BASE-LX/LH all refer to Gigabit Ethernet transmission. Among them, the 1000BASE-LX is a standard specified in IEEE 802.3 Clause 38 which uses a long wavelength laser, while the 1000BASE-LH and 1000BASE-LX/LH are just terms widely used by many vendors. Long Haul (LH) denotes longer distances while Long Wavelength (LX) denotes less energy which is obviously shorter distance. The 1000BASE-LX/LH SFP modules compatible with the IEEE 802.3z 1000BASE-LX standard can achieve a distance up to 10km over single mode fiber. Unlike 1000BASE-LX/LH SFP modules, 1000BASE-LH SFP modules operate at a distance up to 70km over single mode fiber. Besides 1000BASE-LX, other...



03 Nov 2015

Since the module multi-source agreement (MSA) association announced the XFP specification, MSA form factors for 10 Gbit/s optical transceivers have evolved along two separate paths that are now converging on XFP as a universal long-term solution. XFP transceiver is an ultra-small, hot-pluggable, 10 Gbit/s optical transceiver designed to help drive cost and power consumption out of 10 Gbit/s optical networking applications, and enables rapid advances in port density after the previous X2 and XPAK transceiver as well.

XFP-10GZR-OC192LR

Features of XFP Transceiver

• Supports 10GBASE Ethernet and OC-192/STM-64 data rates 

• Hot-swappable input/output device plugs into a XFP port 

• Provides flexibility of interface choice 

• Available for various...



31 Oct 2015

In order to cut down the costs on the expensive SFP transceiver modules, many users are seeking for a compatible SFP to use. For example, if your network contains HP routers, firewalls, and switches, you might think that only HP SFP branded transceivers will ensure your equipment functions optimally. However, that seemingly reasonable assumption could cost your company thousands of dollars. Compared to the compatible SFP transceiver produced by third-party companies, HP SFP transceiver comes with dramatically inflated price tags while a third-party compatible one is roughly 80 percent less expensive than HP branded SFP transceiver. Although price isn't everything, it's important to know that you're getting your money's worth. That calls...



30 Oct 2015

SFP transceiver is a compact and hot-pluggable transceiver that plugs into a special port on a switch or other network devices. Cisco SFP transceiver is one of the most popular SFP transceivers for Gigabit Ethernet applications. When choosing SFP transceivers for specific applications in Gigabit Ethernet, we are usually confused with the fiber optic interfaces of them. This article will introduce the family products and the fiber optic interfaces of Cisco SFP transceiver for Gigabit Ethernet applications.

Cisco 1000BASE-DWDM SFP

The Product Family of Cisco SFP Transceivers

The product family of Cisco SFP transceivers include the following types:

  • 1000BASE-T SFP for copper networks
  • 1000BASE-SX SFP for multimode fiber only
  • 28 Oct 2015

    From the origin of 10G Ethernet, optical transceivers have been developed along the way to meet the increasing demand for higher-performance servers, storage and interconnects. SFP+ transceiver is an enhanced version of SFP that supports data rates up to 10 Gbit/s. 10G SFP+ transceiver is a popular industry format supported by many network component vendors. In comparison to earlier XENPAK or XFP module, SFP+ transceiver is more compact and leaves more circuitry to be implemented on the host board instead of inside the module. This article will introduce the 10GbE optical standards and the most common types of 10G SFP+ transceivers.

    10GBASE-SR and 10GBASE-SR Transceiver

    SR stands for short reach. 10GBASE-SR is a port type for multi-mode...



23 Oct 2015

In the 10 Gigabit Ethernet world, fiber optical transceiver modules have been developed to meet the increasing demand for higher-performance servers, storage and interconnects. XENPAK was the first MSA for 10GE and had the largest form factor. X2 became the later competing standard with smaller form factor, among which there are X2-10GB-SR, X2-10GB-LR, X2-10GB-ER and X2-10GB-ZR series. XFP came after X2. Then smaller SFP (small form-factor pluggable) enabling greater port density followed the XFP. The newest module standard is SFP+ transceiver (the enhanced small form-factor pluggable transceiver) which has become the most popular socket on 10GE systems.

What Is SFP+ Transceiver

The small form-factor pluggable plus (SFP+) can be...



21 Oct 2015

1000BASE is a term describing various technologies for transmitting Ethernet frames at a rate of a 1,000,000,000 bits per second, as defined by the IEEE 802.3-2008 standard. 1000BASE SFP transceiver is a hot-swappable input/output device that plugs into a Gigabit Ethernet port/slot, linking the port with the fiber optic network. It can be intermixed in combinations of IEEE 802.3z- compliant 1000BASE-SX, 1000BASE-LX/LH (GLC-LH-SM or GLC-LH-SMD), or 1000BASE-ZX interfaces on a port-by-port basis. Here are the most common types of 1000BASE SFP transceiver modules.

1000BASE-LX SFP Transceiver

LX stands for long wavelength. 1000BASE-LX is a physical layer specification for Gigabit Ethernet over fiber optic cabling as defined in 802.3z....



20 Oct 2015

In order to cut down the costs on the expensive SFP transceiver modules, many companies are seeking for Cisco SFP alternatives to use. When choosing SFP transceivers, many people often run into several frequently asked questions involving the Cisco Catalyst line of switches, and whether we can use a Cisco compatible SFP (a 3rd party SFP) with them. Here are some common questions we might have when using a 3rd party SFP transceiver. And from the answers, we might have a deeper understanding of using these 3rd party SFP transceivers.

Cisco SFP-10G-SR

What Does "Third-Party" Mean?

In commerce, a "third-party" means a supplier (or service provider) who is not directly controlled by either the seller (first party) or the customer/buyer (second party) in a...



15 Oct 2015

With the prosperity of Gigabit Ethernet and 10 Gigabit Ethernet, ensuring clean fiber optic connectors has become one of the most critical requirements for maintaining error-free communication in fiber optic communication systems. Studies have shown that a one micrometer dust particle can block up to one percent of the light and cause a 0.05 dB loss on a single-mode. A 9-micrometer speck is too small to view without a microscope, but a speck of this size can block a fiber core. This is why it’s so important to clean fiber connectors.

Fiber Optic Cleaning Methods

There are multiple ways to clean fiber optic connectors. Fiber optic cleaning kit on the market can be divided to four types based on the cleaning method. • Dry...



10 Oct 2015

FTTH, a form of fiber-optic communication delivery, refers to the installation and use of optical fiber from a central point directly to individual buildings. Before deploying a FTTH network, providers must first decide whether to use a splice, which is a permanent joint, or a connector, which can be easily mated and un-mated by hand. This is for both ends of the drop cable – the distribution point and at the home's optical network terminal (ONT) or network interface device (NID). Both splices and connectors are widely used at the distribution point. At the ONT/NID, either a field-terminated connector or a spliced-on factory-terminated connector can be used.

Splices

Splices can provide excellent optical performance. Their reliability...