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Access, Enterprise and Metro are Growth markets that are not well served by technology sourced from existing enterprise or telecom segments. Existing products suffer from complex manufacturing and poor yield giving high production costs, and inconsistent product performance. Thereby they not only poorly address existing markets and applications but they are also incapable of enabling either advanced packaging such as PLCs or higher optoelectronic component integration. Eblana's isolator-optional laser platform changes this:
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Wavelength Division Multiplexing (WDM) is the technology which enables information transmission on discrete wavelength channels or colours of light. Each information channel is separated by a fixed wavelength spacing or colour separation. In high bit rate PON systems the key wavelength channels are widely separated at 1.31 um, 1.49 um and 1.5 um. Eblana supplies lasers for all of these channels CWDM refers to a more coarse grained
implementation of Dense Wavelength Division Multiplexing (DWDM). In this CWDM,
high aggregate bandwidth systems are realised with uncooled, single mode lasers
emitting in coarsely spaced channels where each wavelength channel has a width
of approximately 20 nm. CWDM systems are implemented in both the both 1.3 um and
1.5 um transmission windows. A common Enterprise application in the 1.3 um window
is the LX4 or IEEE 802.3ae 10Gbase-LX4 10Gbit/s transceiver which is realized
using 4 X 3.125 GBit/s separate single wavelength laser channels in the 1.3 um
spectral window.
For these (C)WDM applications, Eblana's feedback insensitivity single mode lasers,offer substantive improvements over designs using traditional DFB components, particularly in Bill of Materials (BOM) reduction, manufacturing cost reduction of transceiver modules but also in module size reduction due to the removal of optical isolators. |
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last updated Friday, 28, March, 2008 | copyright © 2005 Eblana Photonics Ltd. |
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