Optical circuit assembly and substrate assembly

An optical amplifier module comprising:

• a radiating plate;
• a pumping laser diode mounted on said radiating plate;
• an Er doped optical fiber module mounted on said radiating plate and connected to said pumping laser diode, said Er doped optical fiber module having a reel and an Er doped optical fiber wound around said reel;
• and
• an optical circuit assembly mounted on said radiating plate and connected to said Er doped optical fiber module;
• said optical circuit assembly comprising:
• a first substrate having a plurality of first recesses;
• a plurality of optical components mounted in said first recesses of said first substrate, respectively;
• a first cushion sheet provided on said first substrate, said first cushion sheet having a plurality of openings at positions respectively corresponding to the positions of said first recesses;
• a plurality of optical fibers connected to said optical components and arranged on said first cushion sheet;
• a second substrate having a plurality of second recesses at positions respectively corresponding to the positions of said first recesses;
• a second cushion sheet provided on said second substrate so as to cover said second recesses;
• and
• means for fixing said second substrate to said first substrate so that said first and second cushion sheets come into contact with each other.

An optical circuit assembly having a first substrate, a second substrate, an optical component provided in a space defined by the combination of said first substrate and said second substrate, and an optical fiber connected to said optical component and arranged at the interface between said first substrate and said second substrate;

• said optical circuit assembly comprising:
• a printed wiring board mounted on said first substrate;
• and
• a terminal electrically connected to said optical component;
• said terminal projecting through said first substrate and connected to said printed wiring board.