news digest ♦ Lasers
frequency test equipment, and microwave and optical characterization techniques were performed. The project partners demonstrated error-free data bit transmission over multimode fiber at 40 Gbit/s using the developed electro-optical subassemblies and fiber-coupled modules. The power consumption of the receiver and transmitter modules including driver and amplifier ICs is below 150 mW allowing integration into standard commercial SFP (small form-factor pluggable) transceivers.
Additionally the small size (less than 6 mm x 6 mm) and the power consumption levels of the new prototype modules allows their integration into QSFP (quad small form-factor pluggable) transceivers with Serializer /De-serializer (SerDes ) ICs, assuming the modules´s total power consumption is below 3 W. The production of both single- and multi-mode fiber versions of the QSFP transceiver is possible.
The project and follow-on involvement of an industrial partner will enable scalable mass production at a low cost. Active Optical Cable (AOC) applications and IEEE 802.3bg standard extensions towards low cost low power applications can be targeted for follow-on product exploitation helping to move Berlin toward the technical forefront of the optical engine market
VI System GmbH is a fabless developer and manufacturing company of optical engines and electro-optic components for optical communication at ultrahigh speeds, industrial and consumer applications based in Berlin, Germany.
Modulight Extends Fiberlight Laser Portfolio
The standard fiber coupled lasers vary from 635 to 1550nm and have an improved coupling efficiency and detachable fiber as a new feature.
Modulight has designed new products for its “FiberLight” family addressing both, power and functionality requirements of medical, defense and industrial markets.
Applications suited to the devices include display and projection for visible lasers. The new platform
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www.compoundsemiconductor.net January / February 2011
has an improved coupling efficiency combined with robust mechanical design, and detachable fiber as a new feature.
The FiberLight product family comprises all the fiber coupled laser array products of Modulight, based on one and two laser arrays. Currently, the following wavelengths and power levels are available as standard products:
Wavelength (nm) (W)
635 7
650 12
1470 30
1550 25
Power, single array Power, double array (W) 3 or 5 7 15 15
Typical configurations include a thermistor for temperature monitoring and a female SMA-905 connector designed for 400 micron core NA=0.22 fiber. Other fiber diameters and additional features including monitoring photodiode, fiber sensor, and aiming beam are also available.
Tommi Hakulinen, product engineer responsible for Modulight’s fiber coupled products commented, “Improved FiberLight platform along with recent developments in our laser bar products form a product line that is competitive in various markets such as: medical, research, defense, and industrial applications. These upgrades in performance and features of FiberLight platform put us to the forefront of the fiber coupled laser array technology in the visible red and eye-safe long-wavelength laser diodes.
“We have also focused on streamlining the manufacturing chain and pushing down the cost despite of added features and higher output power and efficiency. Along with the FiberLight platform we are making constant improvements on both, array and multiple single-emitter based fiber coupled lasers, to accommodate needs in a range applications from laser projection to surgery and illumination,” concluded Hakulinen.
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