Fiber Optic Communication

In the later year of 2011, Cisco launched 3750 Series switch, with a purpose to improve LAN operating efficiency and resiliency for stackable switches. Cisco Catalyst 3750-X Series is one series of Cisco 3750 Series, which featured as high availability, scalability, security, energy efficiency, and ease of operation. The detailed information about Cisco Catalyst 3750-X Series switch would be provided in this article. In addition, we will guide you to plug your optical modules into this switch, all the installation and removing procedures as well as cautions are fully covered in the following passage. Overview on Cisco Catalyst 3750-X Series switch Cisco Catalyst 3750-X Series switch are 12-port and 24-port Gigabit Ethernet Small Form-Factor Pluggable (SFP) switches. You can see it more clearly in the following figure. Different from the traditional switch design, they additionally added some other functions, such as four optional network modules, redundant power su...

Most us of us may quite familiar with 10G, 40G and 100G Ethernet network, but we know little about 25G Ethernet, or even never heard about it. In the race of 10G, 40G and 100G Ethernet, it seems that 25G Ethernet lagged far behind. However, it is a good choice for network connectivity indeed. So what is 25G Ethernet and its benefits? And what about its cables and optical modules? The detailed information about 25G Ethernet would be provided in this article. Overview on 25G Ethernet Researched and developed by IEEE group, 25G Gigabit Ethernet is a standard for Ethernet connectivity. Compared with 10G, 40G and 100G Ethernet, 25G and 50G Ethernet were the latest developed Ethernet specification. 25G Ethernet Consortium was formed in July 2014 to support the specification of single-lane 25G Ethernet. It is an open organization to all third parties who wish to participate as members to enable the transmission of Ethernet frames at 25 or 50 Gigabit per seconds (Gbps) and...

Over the years, 40G and 100G networks are developing rapidly, but nearly all new network building or network upgrading are based on 10G network. As an indispensable part in 10G network building, 10G optical transceiver has been designed and standardized by IEEE group as early as 2006. Compared with the prevalent 10GBASE-SR, 10GBASE-LR optical modules on the 10G transceiver market, 10GBASE-T SFP+ copper transceiver receives little attention. Different types have their own pros and cons, so why should we choose 10GBASE-T SFP+ transceiver for 10G network connection instead of others? This article would provide a satisfying answer for you. Basic Information About 10GBASE-T SFP+ Transceiver 10GBASE-T meets all the bit-error rate (EDR) requirements of all the Ethernet and storage over Ethernet specifications, which is specifically designed for high speed communication links that require 10G Ethernet over cat6a or cat7 cable. It uses the familiar RJ45 connector and provid...

Generally speaking, a cabling upgrade is indispensable if we intend to migrate network from 10G to 40G. It is no doubt that this would afford the extra expense and time. Is there a solution to allow us to get the best of both worlds—save both money and time? The answer is yes—Juniper’s QSFP+ LX4 transceivers provide 40 Gbps connectivity with immense cost savings and simplicity for next-generation data center 40GbE deployments. But what is it? And how does it work? This article would provide a satisfying solution for you. Overview on Juniper QSFP+ LX4 LX4 is a new 40G Ethernet optical technology, which represents a new way to deploy 40GbE that meets all of the performance criteria of today’s data centers. The Juniper QSFP+ 40G LX4 transceiver, a short-reach optical transceiver that delivers 40 Gbps over duplex OM3 or OM4 MMF, allows 40 Gbps connectivity to connect directly to the 10 Gbps fiber and fiber trunk. It has four 10 Gbps channels, each of which can transmit...

In recent decades, Cisco 1000BASE SFP transceivers have been widely used by many Ethernet users. There are many types of 1000BASE-LX/LH SFP transceivers on the market, such as Cisco GLC-LG-SM, GLC-LG-SM-RGD, GLC-LG-SM-20, which are operating on standard single-mode fiber-optic link spans of up to 10 km and up to 500 m on any multimode fibers. Among them, Cisco GLC-LG-SM and GLC-LG-SMD are two types of Cisco 1G SFP transceivers which are warmly welcomed by lots of Ethernet users. Do you know about them? And how to select? The detailed information about Cisco GLC-LG-SM and GLC-LG-SMD would be provided in the following passage. Overview on Cisco GLC-LH-SM The Cisco GLC-LH-SM 1000BASE-LX/LH Ethernet transceiver is a Duplex SFP transceiver for optical communications. It is fully compliant to Multi-Source Agreement (MSA), allowing it to function with other third party MSA compliant networking equipment. This 1000BASE SFP optical transceiver is capable of transmitting data at speeds of u...

Among all the 100G transceivers, most Ethernet users intended to use 100G QSFP28 transceivers instead of other 100G transceivers to connect switches, routers and servers. There are several common types of 100G QSFP28 modules, including 100G QSFP28 LR4,100G QSFP28 SR4, 100G CWDM4 and 100G PSM4. LR4, SR4 and IR4 are three common types of 100G QSFP28 modules. It is known to all that LR is set for long-reach transmission while SR for short-reach transmission. How about IR4? What is the difference between IR4 and SR4? A satisfied answer will be provided in this article. Introduction to 100G QSFP28 SR4 100G QSFP28 SR4 is a pluggable and parallel fiber optic transceiver for 100G Ethernet. This transceiver is a high performance module for short-range multi-lane data communication and interconnect applications. It offers 4 independent transmit and receive channels, each capable of 25Gbps operation in each direction with 112.2Gbps bandwidth for an aggregate data rate of 100Gbps with each la...

Nowadays, QSFP28 transceivers play a leading role on the market of 100GBASE transceivers for their smallest form-factor and lowest power consumption among other 100G optics. The common QSFP28 transceivers are 100GBASE-SR4, 100GBASE-SR10, 100GBASE-LR4, 100GBASE-ER4, 100G CWDM4 and 100G PSM4... Data can be transmitted through 100G QSFP28 transceivers connected with MTP/MPO patch cable or duplex LC patch cable. Different patch cables have different connector types, which must be plugged into corresponding interface correctly. Thus, it is imperative to be aware of 100G  QSFP28 connectors , interfaces as well as patch cables and that will be mainly covered in this passage. Detailed Information About Common 100G QSFP28 Transceivers Different types of QSFP28 transceivers match different patch cables. Here, we list some common 100G QSFP28 transceivers in detail, especially for their connectors and interfaces. MTP/MPO Connectors Applied For QSFP28 Transceivers As we can s...