Intel first to market with integrated laser silicon photonics products
TECHNOLOGIES & PRODUCTS
Roy Rubenstein – see page 32
Diamond’s innovative high power solutions for laser applications
PS Contact
PM-PS Contact
PSm Contact
as on the core eccentricity tolerance, which has been reduced compared to the standard. Diamond SA has an ISO/ IEC 17025:2005 certified laboratory to qualify its own products and also executes qualifications plans for customers. For this purpose, Diamond has the following lasers: SM 1550nm 10W, MM 105/125 0.22NA 976nm 100W, MM 200 0.22NA 126 cm 2 of surface that can collect light from any direction, with existing telecommunications technology to achieve data rates of more than 2 gigabits-per-second (Gbps). “We demonstrated the use of fluorescent optical fibers that absorb one color of light and emit another color,” said Tiecke. “The optical fibers absorb light coming from any direction over a large area, and the emitted light travels inside the optical A high-speed free-space optical network requires very fast detectors to receive the laser light carrying information. But speed must be balanced against size; although larger detectors make an easier target to hit with a beam of laser light that’s traveling through the air, increasing the size of a detector makes it slower. A combination of optics and mechanical systems fiber, which funnels the light to a small, very fast photodetector.”
same performance, as the failure modes between these two technologies are similar. Laser Pumps using standard MM 105/125 0.22NA have become commonly used components and Diamond has developed contact connectors for this application, testing them successfully up to 100W. The optical interface has required slight modification, especially on the mating adapter, as well
The PS and PM-PS requires a fusion spliced GRIN lens to decrease the power density while collimating the beam. This allows a connection contact where the main failure mode is drastically reduced by the subsequent lower power density at ferrule-end. The E-2000™ PS connector has been qualified without any failure at 6W for 2000h. The PM-PS will sustain the
Diamond SA entered the world of high power connections over 15 years ago, encouraged by the increased use of fibre optics in laser and sensor manufacturing. The company have developed three technologies for the three main fibre types, with the PS Contact designed for SM, the PM-PS Contact designed for PM and the PSm Contact for MM fibres.
Detector from Facebook’s Connectivity Lab overcomes challenge of using light for wireless
towers can be challenging to deploy in a cost-effective way. Using laser light to carry information across the atmosphere can potentially offer very high bandwidths and data capacity, but one of the primary challenges has been how to precisely point a very small laser beam carrying the data at a tiny light detector that is some distance away. The Facebook researchers have demonstrated a method for using fluorescent materials instead of traditional optics to collect light and concentrate it onto a small photodetector. They combined this light collector, which features
world who cannot currently access it. “A large fraction of people don’t connect to the internet because the wireless communications infrastructure is not available where they live, mostly in very rural areas of the world,” said Tobias Tiecke, who leads the research team. “We are developing communication technologies that are optimised for areas where people live far apart from each other.” called free-space optical communications, offers a promising way to bring the Internet to areas where optical fibers and cell Light-based wireless communication, also
Today’s high-speed wired communication networks use lasers to
carry information through optical fibers, but wireless networks are currently based on radiofrequencies or microwaves. In an advance that could make light-based wireless communications ubiquitous, researchers from Facebook, Inc.’s Connectivity Lab have demonstrated a new approach for detecting optical communication signals travelling through the air. Facebook’s Connectivity Lab develops technologies aimed at providing affordable Internet services to the 4 billion people in the
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| ISSUE 7 | Q3 2016
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