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Latest multisource deal covers long-haul optics

Posted: 06 Sep 2004 ?? ?Print Version ?Bookmark and Share

Keywords:optical component? photodiode? lasers? avanex? eudyna devices?

The latest multisource agreement in the 10Gb optical component market announced in Tokyo, Japan on September 1 covers long-reach optical devices using externally-modulated lasers and avalanche photodiodes.

Avanex Corp., Eudyna Devices Inc., Mitsubishi Electric Corp., Oki Electric Ind. Co. Ltd, Opnext Inc., Sumitomo Electric Industries Ltd and TriQuint Semiconductor Inc. have agreed on common specs for the XMD agreement.

The agreement covers both receive optical subassembly (ROSA) and transmit optical subassembly (TOSA) devices embedded into small form-factor XFP pluggable modules. Several alliance members already have agreed on a multi-source agreement for MSA modules, as well as previous TOSA/ROSA specs, so the additional XMD-MSA sets another level of standardization for XFP.

XMD-MSA is used in transceiver designs carrying 10Gb signals over 20km of fiber or greater. The spec can be used with 10Gb Ethernet, 10Gb Fiber Channel or OC-192 Sonet. The newest XMD specs are used with external-modulator TOSAs and avalanche photodiode transimpedance amplifiers.

Earlier agreements covered devices that used distributed feedback lasers or Fabry-Perot lasers inside the TOSA, and PIN photodiode TIAs inside the ROSA.

The new specs include common mechanical dimensions for TOSAs and ROSAs, common electrical interface standards (including flexible PCBs) along with optical and electrical characteristics of the components.

- Loring Wirbel

EE Times





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