Interposer with separable interface

An interposer for coupling an optical conduit to an optical component, said interposer comprising:

• an optical component comprising at least a photonic integrated circuit having an optical waveguide;
• a first lens component having a first lens overlaying said optical component, wherein said optical component and said first lens component are discrete components;
• a second lens component overlaying said first lens component and having a second lens, said first and second lenses being configured to define an expanded-beam coupling therebetween;
• wherein said first and second lenses are integral with said first and second lens components, respectively;
• wherein an air gap exists between said first and second lenses;
• wherein said first and second lenses are configured as collimating lenses;
• at least one reflective surface optically coupled with said second lens;
• a first optical path at least partially defined between said optical component and said first lens to accommodate a diverging light beam from said optical component to said first lens, said first optical path being essentially perpendicular to said optical waveguide;
• a second optical path at least partially defined between said second lens and said at least one reflective surface to accommodate a converging light beam from said second lens to said at least one reflective surface;
• and
• a separable interface between said first and second lens components at said expanded-beam coupling.