Hamamatsu to intro new 10-Gbit/sec ROSA devices at OFC/NFOEC 2007

MARCH 15, 2007 -- Hamamatsu Corp. is introducing several new 10-Gbit/sec receiver optical sub-assembly devices for optical fiber communications of various types, including 10-Gigabit Ethernet, SDH/SONET, and WDM systems.

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MARCH 15, 2007 -- Hamamatsu Corp. (search for Hamamatsu) is introducing several new 10-Gbit/sec receiver optical sub-assembly (search for ROSA) devices for optical fiber communications of various types, including 10-Gigabit Ethernet (10-GbE), SDH/SONET, and WDM systems.

The new devices will be on display at OFC/NFOEC (Booth #2567), to be held in Anaheim, CA, from March 27-29, 2007.

For short-range 10-GbE applications, the G10447 series GaAs PIN photodiode with preamp supports 10-Gbit/sec bit rates at 850 nm. The G10447 series consists of a plastic package, 1.25-mm diameter sleeve-type ROSA for LC receptacles (G10447-54) and a plastic package, 2.5-mm diameter sleeve-type ROSA for SC receptacles (G10447-51). It has a large 60-micron active area for multimode optical fibers and provides differential output, typical gain of 6-kohm, and minimum receivable sensitivity of typically -13.5 dBm (OMA, extinction ratio: 3.0 dB), says the company. Power supply voltage is 3.3 V.

Another product for short-range applications is the G10208 series InGaAs PIN photodiode with preamp, which can be used with multimode fibers for 10GBASE-LRM and other 10-GbE transmission at 1300 nm. The G10208 series consists of a plastic package, 1.25-mm diameter sleeve-type ROSA for LC receptacles (G10208-54) and a plastic package, 2.5-mm diameter sleeve-type ROSA for SC receptacles (G10208-51). According to Hamamatsu, features include differential output, low power supply voltage of 3.3 V, and minimum receivable sensitivity of typically -15 dBm (OMA, extinction ratio: 3.5 dB). A built-in transimpedance amplifier provides automatic gain control.

For short- to long-range applications, the G10342 series InGaAs PIN photodiode with preamp supports bit rates of up to 11.3 Gbits/sec at 1300 nm or 1550 nm. This series conforms to XMD-MSA specifications for 10-Gbit/sec miniature devices, which ensures compatibility with 10-GbE, SONET OC-192/SDH STM-64, and XFP modules. In the G10342 series, housing and signal ground are electrically isolated. Other features include low power supply voltage of 3.3 V, differential output, high transimpedance gain of 6 kohm, and minimum receivable sensitivity of typically -20.5 dBm (average extinction ratio: 14 dB). Low optical return loss of 35 dB is another benefit, notes the company.

In addition to the 10-Gbit/sec ROSAs, Hamamatsu says it will display a variety of other optical communications devices at OFC/NFOEC 2007, including InGaAs linear image sensors for WDM systems. These sensors are especially useful for monitoring power and wavelength in ROADM equipment in today's growing metro optical networks.


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The G10447 series consists of a plastic package, 1.25-mm diameter sleeve-type ROSA for LC receptacles, and a plastic package, 2.5-mm diameter sleeve-type ROSA for SC receptacles.
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