Modular optical amplifier assembly

According to the present invention modular optical amplifier assembly, comprises at least one first module and at least one second module. The first and second modules are optically connected to one another. The first module is an Optical Power Supply module. The first module comprises an optical circuit including: (i) at least two optical ports, (ii) at least a one light source having a first wavelength known to cause amplification in rare earth doped optical fiber located between the optical ports; (iii) at least one bidirectional light combiner/separator optically coupled to the light source, and (iv) at least one position for a directional optical attenuator, located between the two optical ports. The second module is an amplification module. The second module comprises an optical circuit including (i) at least two optical ports, and (ii) at least one amplification medium.