Hamamatsu Details OFC ProductsHamamatsu Details OFC Products

Hamamatsu introduces ROSAs and TOSAs for Gigabit Ethernet and Fibre Channel transceivers

February 26, 2004

3 Min Read

LOS ANGELES -- Hamamatsu Corporation introduces the G9284-14 ROSA (Receiver Optical Sub-Assembly) that delivers high-speed response and high sensitivity. The reliability and overall performance of the G9284-14 make it well suited for design into 1.3/1.55 m SDH and SONET communications networks.

With a response of 10 Gbps, the G9284-14 meets the bandwidth requirements of the most popular optical communications systems. The G9284-14’s strong overall performance is partly due to its design, which integrates an InGaAs PIN photodiode with a preamp. It has typical sensitivity of +1 to -18 dBm, and typical differential trans-impedance of 5.5 kΩ at 100 MHz. Photo sensitivity is typically 0.80 A/W at 1.31 m and 0.85 A/W at 1.55 m, while the G9284-14 has typical optical return loss of 14 dB at 1.31 m.

In a separate release:

Hamamatsu Corporation introduces the G9287-14 ROSA (Receiver Optical Sub-Assembly) that has been specifically designed to meet the performance and reliability demands of 850 nm SDH and SONET applications. The G9287-14 features high-speed response and high sensitivity, and has very low power requirements, allowing it to be designed into a wide variety of optical communications systems.

The G9287-14 has a 10 Gbps response so it meets the bandwidth requirements of most fiber optic networks. Its sensitivity is typically +2 to -12.5 dBm, and the ROSA has typical differential trans-impedance of 5.5 kΩ at 100 MHz. Other specifications include photo sensitivity of typically 0.45 A/W and typical optical return loss of 14 dB.

It was also announced:

Hamamatsu Corporation introduces the L9278-14 TOSA (Transmitter Optical Sub-Assembly) that features a 1310 nm FP (Fabry-Perot) laser diode and a conventional 1.25 mm TOSA-type sleeve. Combining the inherent advantages of the TOSA design with Hamamatsu’s high reliability and proven performance, the L9278-14 can be used in a wide array of optical fiber communication applications, including Gigabit Ethernet and Fiber Channel.

With a high-speed response of 2.5 Gbps and 0.2 mW optical output, the L9278-14 has the performance necessary for 1310 nm applications. It has a typical spectral half width of 1.0 nm. The FP laser diode also has typical rise/fall times of 200 psec and a maximum dark current of 100 nA.

Engineers realize a number of benefits due to the L9278-14’s small size. It reduces the amount of required board space, thereby providing additional design flexibility. There is also a financial savings associated with the TOSA’s compact design. Despite its small size, the L9278-14 consists of a high-speed FP laser diode, optical isolator, and a rear facet monitor diode, which allows for external optical power control.

In another release:

Hamamatsu Corporation introduces the L9279-14 TOSA (Transmitter Optical Sub-Assembly), a high-speed, high performance 850 nm VCSEL (Vertical Cavity Surface Emitter) laser diode that is designed for Gigabit Ethernet and Fiber Channel transceivers. Developed to meet the stringent demands of telecommunications standards, the L9279-14 enables short, low-cost links in optical communications networks.

The L9279-14 has strong overall optical performance and high reliability. It features a high-speed response of 2.5 Gbps and has 0.38 mW optical output. The laser diode has typical spectral half width of 0.4 nm, while rise/fall times are typically 150 psec each.

Hamamatsu Corp.

Subscribe and receive the latest news from the industry.
Join 62,000+ members. Yes it's completely free.

You May Also Like