A tap coupler device for an optical array is formed either in a waveguide
structure or in a V block in which a fiber array may be mounted. The tap
coupler device may include a substrate with main and tap waveguides formed
therein, and waveguide tap couplers formed in the substrate for diverting
a portion of the optical signal from the main waveguides to corresponding
tap waveguides. Another variation includes a substrate including
waveguides, with the surface of the substrate where the waveguides end
inclined to reflect a portion of the signals in the waveguides toward the
top surface of the substrate. Yet another variation includes an input V
block having input fibers. The surface of the V block where the input
fibers terminate is inclined to reflect a portion of light signals from
the input fibers toward the top surface of the V block.
