Dynamically-distributable multiple-output pump for fiber optic amplifier

A multicast switch module comprising a PLC N×M multicast switch having N inputs (MCS inputs), an array of N independently drivable pump laser elements and an array of N planar waveguides on a common substrate, the array of N independently drivable pump laser elements comprising a common package and a controller, wherein each pump laser element comprises a diode laser having distinct electrical control and optically coupled by a planar waveguide of the array of N planar waveguides to a distinct output fiber, and N optical amplifiers with each optically connected to an input waveguide, the independently drivable laser element and an MCS input;

• wherein the controller distributes electrical power to each of the laser diodes such that up to a maximum total optical output power can be selectively and dynamically allocated among said diode lasers.

A multicast switch module comprising a PLC N×M multicast switch having N inputs (MCS inputs), an array of N independently drivable pump laser elements and an array of N planar waveguides on a common substrate wherein each pump laser element comprises a diode laser having distinct electrical control and optically coupled by a planar waveguide of the array of N planar waveguides to a distinct output fiber, and N optical amplifiers with each optically connected to an input waveguide, the independently drivable laser element and an MCS input;

• wherein the array of N independently drivable pump laser elements comprises an array of diode lasers on a common substrate sharing a common electrode, a common first doped semiconductor layer, a light emitting intrinsic semiconducting layer, an oppositely doped semiconductor layer with ridges positioned with the intrinsic layer between the common first doped semiconductor layer and the oppositely doped semiconductor layer, and a laser element specific electrode for each laser element positioned in association with the ridge.