Patent ID: 7373053

Claim:
An optical fiber array comprising: a V-groove substrate having a plurality of V-grooves in parallel to each other; a lid plate; and a plurality of optical fibers which are aligned between the V-grooves and the lid plate, and fixed by an adhesive, wherein pitches of the V-grooves are substantially equal to an average outer diameter “d” of the optical fibers, wherein an average value of the pitches of the V-grooves is in a range of 1.0 times to 1.1 times an average value of the outer diameters of the optical fibers; a deviation “Δd” of the outer diameter of each optical fiber from the average value “d” of the outer diameters of the optical fibers is 0.3 μm or less; a core eccentricity “Δe” of each optical fiber is 0.4 μm or less; and a radius of curvature of fiber curl of each optical fiber is 8 meters or more.