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Wednesday, June 19, 2013 at 2:28PM u2t Photonics announced recently a balanced detector that supports 64Gbaud. This promises coherent transmission systems with double the data rate. But even if the remaining components - the modulator and DSP-ASIC capable of operating at 64Gbaud - were available, would such an approach make sense?
Gazettabyte asked system vendors Transmode and Ciena for their views.
Wednesday, August 22, 2012 at 10:29AM Vendors and service providers are implementing the first examples of flexible, elastic-bandwidth networks. Infinera and Microsoft detailed one such network at the Layer123 Terabit Optical and Data Networking conference held earlier this year.
Optical networking expert Ioannis Tomkos of the Athens Information Technology Center explains what is flexible, elastic bandwidth.
Part 1: Flexible elastic bandwidth
"We cannot design anymore optical networks assuming that the available fibre capacity is abundant"
Prof. Tomkos
Wednesday, May 30, 2012 at 7:39AM Kim Roberts, senior director coherent systems at Ciena, moves from theory to practice with a discussion of practical optical transmission systems supporting 100Gbps, and in future, 400 Gigabit and 1 Terabit line rates. This discussion is based on a talk Roberts gave at the Layer123's Terabit Optical and Data Networking conference held in Cannes recently.
Part 2: Commercial systems
The industry is experiencing a period of rapid growth in optical transmission capacity. The years 1995 till 2006 were marked by a gradual increase in system capacity with the move to 10 Gigabit-per-second (Gbps) wavelengths. But the pace picked up with the advent of first 40Gbps direct detection and then coherent transmission, as shown by the red curve in the chart.
Source: Ciena
Wednesday, August 24, 2011 at 2:15PM In Part 1 of a Q&A with Gazettabyte, Brandon Collings, JDS Uniphase's CTO for communications and commercial optical products, reflects on the key optical networking developments of the coming decade, how the role of optical component vendors is changing and next-generation ROADMs.
"For transmission components, photonic integration is the name of the game. If you are not doing it, you are not going to be a player"
Brandon Collings (left), JDSU
Thursday, December 23, 2010 at 7:31AM 
Jens Fiedler, vice president sales and marketing (left), and CEO Andreas Umbach.
Wednesday, October 13, 2010 at 9:13AM In the first of a two-part interview, Rafik Ward, vice president of marketing at Finisar, talks about 40 and 100 Gigabit optics, emerging market opportunities and why this is the best time for a decade to be in the optical components industry.
"This is probably the strongest growth we have seen since the last bubble of 1999-2000." Rafik Ward, Finisar
Friday, May 14, 2010 at 4:50PM Briefing: High-speed optical transmission.
Part 3: What's next?
Given the 100 Gigabit-per-second (Gbps) optical transmission market is only expected to take off from 2013, addressing what comes next seems premature. Yet operators and system vendors have been discussing just this issue for at least six months.
And while it is far too early to talk of industry consensus, all agree that optical transmission is becoming increasingly complex. As Karen Liu, vice president, components and video technologies at market research firm Ovum, observed at OFC 2010, bandwidth on the fibre is no longer plentiful.
“We need to keep a very close eye that we are not creating more problems than we are solving.”
Brandon Collings, JDS Uniphase.
1Tbps, 400Gbps, BT, DP-QPSK, Gridless, OFDM, QAM, Verizon Business, soft-decision FEC in Feature Print Article 