Aug 28 2008
Sumitomo Electric Industries, Ltd., today announced that it has developed a new coaxial laser diode module capable of supporting high frequency bandwidth applications.
With the addition of the newly-designed model, Sumitomo Electric’s family of coaxial laser diode modules will be capable of supporting a broader frequency range, from 2GHz to 5GHz. The modules are used in mobile base station communication systems. Presently, bandwidth requirements are increasing due to two factors. The first is the growing demand for upgrading of existing communications systems, such as upgrade to digital CWDM. The second is the emergence of new applications, among which is the very promising Worldwide Interoperability for Microwave Access (WiMAX). In wireless applications, Sumitomo Electric’s new coaxial laser diode module is capable of supporting such upgrades and new applications.
WiMAX supports three frequency bands (2.5GHz, 3.5GHz and 5.8GHz), as is defined in the IEEE 802.16-2004 specifications. The new coaxial laser module can support both the 3.5GHz and 5.8GHz bands.
One of the key features of the new module is its capability to achieve a 5GHz bandwidth. Its experience with various assembly and packaging techniques for a variety of modules such as 10G TOSAs has enabled Sumitomo Electric to successfully develop a high frequency diode for new mobile applications. As a result of redesigning the built-in isolator, there is an improvement in reflection and also a reduction of parasitic capacitance.
Sumitomo Electric’s new coaxial laser diode module will be available for sampling in Q3 2008 and for sale by the end of CY2008.