Monday, November 14, 2011

Mitsubishi Electric to sell distributed feedback diode and avalanche photodiode for 10G-EPON ONUs

TOKYO, USA: Mitsubishi Electric Corp. announced the coming launch of a distributed feedback laser diode (DFB-LD) (ML7xx42) and an avalanche photodiode (APD) (PD8xx24) suitable for the optical network units (ONU) of symmetric 10 gigabit Ethernet passive optical networks (10G-EPON). The ML7xx42 and PD8xx24 both will launch commercially on November 30.

While current fiber to the home (FTTH) services are mainly based on 1 Gbps gigabit Ethernet passive optical networks (GE-PON), symmetric 10G-EPON offering 10 Gbps upstream and downstream performance are expected to be commercialized soon. However, 10G-EPON are simple networks that use optical couplers and require high-power DFB-LD and high-sensitivity APD due to optical loss in the couplers.

Mitsubishi Electric’s new high-power, low-current DFB-LD and high-sensitivity APD are both suitable for symmetric 10G-EPON ONUs and thereby will contribute to network simplification and faster broadband service.

High-power, low operating current DFB-LD offering high-speed performance
* New DFB-LD with aluminum gallium indium arsenic (AlGaInAs) active layer.
* 10mW output power despite low operating current in high-temperature conditions.
* 10 Gbps high-speed performance due to improved modulation bandwidth.

TO-CAN APD with top-level high sensitivity
* New, low-noise APD with aluminum indium arsenic (AlInAs) multiplication layer.
* New high-frequency circuit board with suppressed noise output.
* Top-level sensitivity of 31.5dBm (typ.).

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