8 March 2018
Mitsubishi Electric to launch compact integrated 400Gbps EML-TOSA
© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.
On 1 April, Tokyo-based Mitsubishi Electric Corp will begin shipping a laser-diode transmitter optical subassembly (TOSA) capable of supporting 400Gbps optical transmissions.
In response to the demand for increasing data capacity, Mitsubishi Electric’s new laser-diode TOSA offers 400Gbps transmission capability for large-capacity communication facilities (data centers, etc) and high-speed optical transmission networks.
Specifically, when used in a set of two, the new TOSA (in a 6.5mm x 25.0mm x 5.4mm package) is claimed to be the first electroabsorption modulated laser diode (EML)-TOSA solution for IEEE 400GBASE-LR8 applications - compliant with common specifications for CFP8 optical transceivers - via multiple transmission of eight wavelengths at 50Gbps/wavelength achieved with 4-level pulse-amplitude modulation (PAM4).
Picture: Compact integrated 400Gbps EML-TOSA FU-402REA-41 (top) and FU-402REA-42 (bottom).
Due to the EML chip having a high extinction ratio (6dB typical) and high operating power (2W maximum), the compact integrated 400Gbps EML-TOSA is capable of transmission over a reach of 10km.
The two models are:
- the FU-402REA-41 (for short wavelengths) has an electroabsorption modulated laser diode with an emission wavelength of 1273.54, 1277.89, 1282.26 or 1286.66nm;
- the FU-402REA-42 (for long wavelengths) has an electroabsorption modulated laser diode with an emission wavelength of 1295.56, 1300.05, 1304.58 or 1309.14nm.
The new device will be displayed at the Optical Fiber Communication Conference & Exhibition (OFC 2018) in San Diego, CA, USA (13-15 March).
Mitsubishi Electric shrinks integrated 100Gbps 40km EML-TOSA to 30% size of predecessor