Defining Ethernet performance
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Infonetics: Tunable transceivers, 100G pace optical transceiver growth
Once the final numbers for 2012 are tallied, sales of optical transceivers and transponders will have risen 7% this year, believes market research firm Infonetics Research. Tunable transceivers and 100-Gbps transceivers will have set the pace, Infonetics analysts say. The news should continue to be good in 2013 as well, the company expects.The announcement comes as Infonetics preps its 10G/40G/100G Optical Transceivers market size and forecast report, which tracks such devices sold for optical transport, enterprise, data center, and carrier routing and switching applications. The estimation is slightly more aggressive than that of LightCounting, which recently suggested the market will have grown 6% this year (see “LightCounting: 2012 'reasonably good' for optical transceiver vendors”).The data suggests that the hype surrounding 100-Gbps technology was well founded. "100G continues to surpass even our most optimistic projections," reports Andrew Schmitt, principal analyst for optical at Infonetics Research. "There's been a flurry of prototyping, sampling, and trial activity all around the world, including China, where plans for 100G have been bumped up by 12 months since we spoke to operators there last spring. In line with our aggressive forecasts, worldwide shipments of 100G coherent transceivers more than tripled in 2012, and will at least double in 2013."Many 100G transceiver shipments this year came from network equipment vendors, a trend Infonetics expects to continue for the foreseeable future. In fact, the company forecasts that systems houses will supply more than 75% of 100-Gbps long-reach ports by 2014-2015.Combined sales value of 40-Gbps and 100-Gbps optical modules should equal that of 10-Gbps optical transceivers by 2015 as well, which further testifies to the shift toward high-speed fiber-optic networks (see figure below). Concurrently, revenues for 10G and 40G devices are being pressured by price declines and the growing popularity of 100G."The other big deal in the transceiver market is that the pricing gap collapsed between tunable and non-tunable XFP, further spurring adoption of tunable XFP technology," Schmitt adds.The overall growth comes against backdrop of capex declines and macro-economic uncertainty. Nevertheless, Infonetics remains bullish on the optical transceiver/transponder niche, forecasting the space will see double-digit growth in 2013. That will place market value near $2 billion, Infonetics concludes.
Ensuring industrial Ethernet performance, reliability
During the past 10 years, Internet and networked devices have proliferated beyond what anyone could have imagined, and there is every indication that growth will continue to be strong in the coming years (see Figure 1). Bloomberg reports that Internet traffic is expected to grow 42% in 2012 and should reach 1.3 zettabyes, or 1.3 trillion gigabytes, by 2016. While this growth has primarily been fueled by consumer and business use, it was inevitable that the automation and control industry would take part in this transformation. The early challenges of adapting Ethernet for use in industrial networks have been addressed with improvements in technology and reliability, leading to strong continued growth in the use of industrial Ethernet. This article explores the requirements of building a network that’s reliable enough for the stringent requirements in automation and control and serves as a guide to technologies that are available today as well as to best practices for ensuring top reliability and performance in industrial Ethernet networks.
Defining Ethernet performance
Broadly speaking, the three major performance areas that matter most to automation engineers when working with industrial Ethernet are reliability, bandwidth, and determinism. Reliability refers to network and device uptime and is generally the most critical performance element for automation and control networks. The need for high reliability is also the primary reason that the automation and control space historically lags behind the consumer space when it comes to adopting new technology. Business users can generally withstand momentary failures in e-mail or network communication, and they see more immediate benefits when adopting the latest, time-saving technology. The situation is different for industrial users, where interruptions in operation or communication can result in immediate and substantial losses. Industrial users are therefore unlikely to adopt new communication technology until it can guarantee exceptionally stable and reliable performance without interruption under actual operating conditions. Another measure of performance is bandwidth, which refers to the volume of network traffic that can be supported. Bandwidth is becoming an important issue for many industrial users and is driven by several trends: the growing number of devices connecting to the network, the growing use of wireless and cellular technology, and the growing role of IP video in monitoring and surveillance. Although there are still many applications where 10/100 Mbps is more than enough bandwidth to handle the expected network load, Gigabit and even 10GbE networks are fast becoming a standard requirement for industrial network planning. Finally, for many automation and control applications, it is important for industrial Ethernet networks to achieve a level of determinism, where data can be reliably delivered within a predictable time frame. In the past, this was an inherently problematic requirement for Ethernet, which by design allows for great variability in packet delivery time. However, for applications that require highly precise timing and coordination, such as machine control, uncertainty in packet delivery time cannot be tolerated. Fortunately, developments in Ethernet technology and standards have made it possible to achieve the level of determinism required by many industrial users.
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10GTEK TRANSCEIVERS CO., LTD (Hereinafter refered to as 10GTEK) is specialized in developing and manufacturing Fiber Optical Transceivers and High Performance Cables which are wildly applied in Datacom, Telecom and CATV, providing customers with top quality and cost effective products. Our High Speed Cables cover Passive SFP+ Cable, Active SFP+ Cable, QSFP+ cables, MiniSAS (SFF-8088) Cables, CX4 Cables, Harness cables, Breakout Cables, Patchcords. We also manufacture Fiber Optic Transceivers like 10G XFP, 10G SFP+, SFP DWDM/ CWDM, GBIC, etc. The prompt response and excellent customer support contribute to clients‘ full satisfaction.Today, 10GTEK has been growing fast in the optical field for its unique and competitve excellence which has got a high attention from datacom and telecom.
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