ASIP extends temperature range of 1310-nm EML

July 21, 2004 Somerset, NJ -- ASIP Inc. has unveiled an enhanced version of its uncooled 1310-nm Electro-absorption Modulated Laser (EML). The new product, the 10T0006, extends the 0 to 85 ° C temperature range of the existing 10T0004 EML to what the company claims is a first-in-the-industry range of 0 to 95 ° C, allowing suppliers to maximize optical port density in ever-challenging thermal environments.

July 21, 2004 Somerset, NJ -- ASIP Inc. has unveiled an enhanced version of its uncooled 1310-nm Electro-absorption Modulated Laser (EML). The new product, the 10T0006, extends the 0 to 85 ° C temperature range of the existing 10T0004 EML to what the company claims is a first-in-the-industry range of 0 to 95 ° C, allowing suppliers to maximize optical port density in ever-challenging thermal environments.

ASIP's 10T0006 EML is built using the company's patented Asymmetric TwinGuide (ATG) technology, a highly scalable platform for monolithic photonic integration.

Available immediately in commercial quantities, the 10T0006 is offered in both die form and a TOSA version. The 10T3061 TOSA improves the 0 to 75 ° C operating temperature range of ASIP's existing 10T3001 TOSA to an extended range of 0 to 85 ° C. Unlike Directly-Modulated-Lasers (DML), the operating bandwidth of ASIP's uncooled EML is independent of temperature and maintains high extinction and mask-margin, even at very high temperatures. ASIP ensures optimal power across the entire temperature range with its aluminum laser active region.

"Almost two years ago, ASIP announced the world's first commercially-available uncooled EML, and since that time, this breakthrough product has quickly become the gold-standard laser for short-reach optical links," contends Milind Gokhale, ASIP co-founder and CTO. "The 10T0006 enables subsystem developers to extend the operating temperature range of the next generation of high-speed transceivers such as XFP. The MSA standard for XFP limits transceiver case temperatures to a maximum of 70 ° C. ASIP's new EML will allow designers to extend maximum operating temperatures to 80 ° C or more."

The 10T0006 supports multiple data rates up to 10.7 Gbits/sec and link distances up to 10 km as specified by Telcordia GR-253-CORE, ITU G.691, and IEEE 802.3ae. Unlike DMLs, the ASIP 1310 EML requires no complex RF characterization to achieve performance specifications. Instead, a simple DC measurement is sufficient to guarantee mask margins of 30% for Gigabit Ethernet links and 15% for SONET links, say company representatives. This combination of DC characterization and high operating margins reduces testing costs, while improving total manufacturing yield. According to the company, cost analyses indicate that 10-Gbit/sec transceivers designed with the ASIP 1310 EML have lower manufacturing costs than competing DML-based designs.

Transceiver power dissipation is similarly reduced with the ASIP EML. In 10-Gigabit Ethernet applications, for example, the ASIP EML can be driven with less than 1.7 V. This reduced drive voltage allows the use of a low-power drive train and enables the path towards XFP power dissipation of 1.5 W or less. Lower power dissipation enables system designers to further increase port density, allowing XFP to meet its full application potential.

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