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“As a one-stop-shop supplier for all these critical pieces of the network, Oclaro is enabling customers to save a significant amount of development time, ensure the highest level of integration on their line-cards, and deliver the network architecture that service providers need for long-term success,” continues Blum.
At the OFC/NFOEC show, Oclaro is introducing a new 40 Gbps PM-BPSK modulator targeted for ultra long haul transmission systems such as those used in submarine applications. The new modulator is sampling today with production scheduled to start in June 2012.
The firm’s products for all 40 Gbps modulation formats allows customers to maintain their existing 10 Gbps networks while also gaining the flexibility to upgrade to higher-speed coherent networks in the future.
The firm’s coherent receiver platform has completed qualification and is entering volume production. The receivers are more than 50 percent smaller than the 100G footprint defined by the OIF - while also providing an option to maintain full compliancy with the OIF standard.
The receivers utilise Oclaro’s indium phosphide integration technology to deliver reliability and are one of the first receiver solutions to package a signal power monitor diode. In the past, customers needed to add a discrete monitor photodiode onto their line cards. By integrating this functionality directly into the receiver, customers can now save valuable line card space, while also lowering costs and reducing development time.
The new micro-iTLA delivers the small footprint, optical power, narrow linewidth and low power consumption needed to transmit at higher data rates across the network. The micro- iTLA delivers a 3 times reduction in size over standard iTLA products while also meeting the requirements for advanced coherent applications.
Oclaro worked with other laser and network equipment manufacturers through the OIF to define a micro-iTLA Multi Source Agreement specification in 2011, specifically defining reductions in footprint and height. With its new micro-iTLA, Oclaro also achieved reductions in power consumption, which will allow its customers to produce efficient designs in small form factors.
The micro-iTLA leverages upon Oclaro’s proven tunable TOSA packaging and solid state tuning based InP DS-DBR chip technologies, of which well over 300,000 tunable lasers have now been deployed. Oclaro’s InP capabilities enable its customers to reduce power consumption and space constraints whilst offering advanced performance.
Oclaro’s micro-iTLA is scheduled to ship to key customers during Q2 of 2012.
Single multicore fibre breaks records with Emcore’s VCSEL technology
OFS says this is an important milestone in the development of next-generation supercomputer and data centre networks
OFS, a developer and supplier of innovative fibre optic network products, has announced a world record transmission of 120 Gb/s over 100 metres across a single strand of multimode fibre.
The joint demonstration was enabled by a seven-core laser- optimised multimode fibre made with OFS LaserWave fibre technology interfaced with custom-designed transceivers from IBM Research (Yorktown Heights, NY), using custom-designed VCSELs and photodiodes from Emcore. It exceeded both the previous transmission length record by 60 metres and the previous data rate record by 50 percent.
“This demonstration illustrates the viability of multi-core multimode fibre as a transmission medium for next-generation high-performance computer networks,” said Durgesh S. Vaidya, senior manager of R&D at OFS. “With advanced light sources such as the Emcore custom arrays, systems designers will be able to achieve the extremely high transmission speeds predicted for future networks while increasing cable density with the opportunity for reducing packaging costs.”
The OFS fibre consists of seven graded-index multimode cores in a hexagonal array. Each of the six outer cores transmits at 20 Gb/s over 100 metres. They employ Emcore’s two-dimensional VCSELs arrays and vertically illuminated photodiodes, fabricated, in a commercial process, with a geometry corresponding to the outer six cores of the fibre. The fibre’s 26 µm core size is directly compatible with the photodiodes needed for 25 Gb/s (20 – 30 µm diameter). The 20 Gb/s VCSELs were flipped chip packaged on an IBM-designed transceiver package with 130 nm CMOS ICs, and the full link was characterised by IBM Research with all six channels running error-free simultaneously.
OFS believes the additional bandwidth density provided by the multi-core fibre link over standard multimode links will help to enable efficient next-generation high-performance computers and data centres, while the larger core sizes compared to single-mode fibre solutions serve to help keep packaging costs sustainable.
“The expected increase in demand for optical fibre cable in these applications will result in significant network design challenges,” Vaidya said. “While bandwidth requirements continue to grow, network managers face considerable constraints on power and cost budgets, not to mention the physical space required by the fibre cabling. Increasing the bandwidth available on each fibre is a critical step in developing optical interconnects for future networks, not only for high- performance computing but also for data-centres, another key growth market for optical fibre.”
OFS’ corporate lineage dates back to 1876 and includes technology powerhouses such as AT&T and Lucent Technologies (now Alcatel-Lucent). Today, OFS is owned by
April/May 2012
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