Mitsubishi Electric launches DFB & APDs for 10G-EPON networks
Mitsubishi Electric Corporation is launching 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, 2011.
ML7xx42
171111.jpg)
PD8xx24
While current fibre 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 commercialised 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.
The high-power, low operating current DFB-LD, which has an AlGaInAs active layer, offers 10 Gbps high-speed performance due to improved modulation bandwidth. It can operate at 10 mW output power despite low operating current in high-temperature conditions.
The TO-CAN APD featuring an AlInAs multiplication layer has a typical top-level sensitivity of 31.5dBm, low-noise and a new high-frequency circuit board with suppressed noise output.
Further specifications of the products are below:
DFB-LD ML7xx42 APD PD8xx24
φ4.8mm TO-CAN package φ5.4mm TO-CAN package
Aspherical lens cap with high coupling efficiency Products with ball lens cap
Light emission peak wavelength: 1,270nm Wavelength band: 1,570nm
Output power: 10mW Minimum sensitivity: -31.5dBm (typ. *2)
Operating current: ≤70mA APD responsivity: 0.8A/W (typ. *2)
Operating temperatures: -5℃to 75℃ Bandwidth: 6.5GHz (typ. *3)
Coupling efficiency: 60%*1 (typ. *2)
*1 ML767T42 with aspherical lens.
*2 Typical value, not guaranteed.
*3 Typical value at multiplication factor M=10.
