news digest ♦ Lasers
The error-free transmission (defined as a bit error ratio <10-12
) used an 80 μm-diameter core POF and reached coupling tolerances as high as ~35 µm.
This is another important milestone proving the applicability of advanced VCSELs for low cost high- speed optical data transmission over 100 metre distances.
Optical data transmission of up to 40 Gbit/s has been realised with high speed photodetectors and transimpendance amplifiers by VI Systems. The V40-850C chip is available in a 250 x 250 µm single die size or as 1x4-channel or 1x12-channel chip array.
The target applications are proprietary optical links and active optical cables at 40 Gbit/s and 100 Gbit/s, Fibre Channel at 14 Gbit/s and 28 Gbit/s, and Infiniband FDR (14 Gbit/s) and EDR (26 Gbit/s) applications.
Product samples are available now.
Oclaro introduces new high- power laser diodes
Designed for the materials processing market, the new parts are ideal for DPSS pumping and direct diode applications. They include 60W at 880nm and 120W at 910 to 1070nm, both on a passive cooler.
Oclaro, a provider of optical communications and laser products, has further strengthened two of its leading high-power laser diode product families by delivering next generation parts that feature improved performance, reliability and industry- leading cost competitiveness.
The new parts are ideal for DPSS pumping and direct diode applications and include 60W at 880nm as well as 120W at 910 to 1070nm, both on a passive cooler, and will be showcased at LASER World of PHOTONICS in Munich this week in the Oclaro booth #469, Hall C1 in the New Munich Trade Fair Centre.
“Oclaro has the technology, packaging and manufacturing expertise to continually drive innovations in power and efficiency for our existing product families,” said Bernd Meyer, Leader, High
142
www.compoundsemiconductor.net October 2011
Power Laser Business for Oclaro. “We are now expanding the capabilities of our OPC family by delivering higher performance across a wider wavelength range and brightness — and we’ve also developed a new family member for the BPM/ BLM mini-cooler series that represents the smallest footprint and highest CW power level of any competitive solution.”
The new BLM component, the BLM9xx/10xx is claimed to represent the industry’s smallest footprint and highest power conductively cooled product. This laser diode delivers up to 120W at the 910 to 1070nm wavelength range and replaces micro- channel coolers in horizontal configurations for DPSS pumping and direct diode applications.
To ensure easy integration, the new BLM9xx/10xx replaces soldering or wire bonding with mechanical electrical connection and mounting.
The OPC880, the new OPC family member is a 60W CW low filling factor bar at the 875nm to 890nm wavelength range and will be used in Oclaro’s own Prosario collimated modules, fibre coupled packages and will also be available as a passively cooled bar to Oclaro customers. By expanding the wavelength range of the existing OPC family, the new OPC880 enables Oclaro to enter the new and growing 880nm neodymium-YAG and neodymium-vanadate pumping market.
Researchers conjure up nanocavity super efficient laser
The GaAs/InAs laser is suited to optical communication systems and could herald a new era in low-energy data interconnects that communicate with light as well as electrons.
In the push towards ever-smaller and ever-faster data transmission technology, a team of Stanford electrical engineers has produced a nanoscale laser that they claim is much faster and vastly more energy efficient than anything available today.
To the Silicon Valley mantra of “faster, smaller” semiconductors, you can now add “more efficient.” The electrical data interconnections inside the
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