Patent ID: 6955478

Claim:
A device comprising: a stub having an aperture, the stub having a first end and a second end, the first end of the stub separated from the second end of the stub by a first stub length, the aperture having a conical portion adjacent the second end of the stub, the conical portion of the aperture having an apex; and an optical fiber mounted in the aperture of the stub, the optical fiber having a first end and a second end, and wherein the first end of the optical fiber is polished so as to be substantially flush with the first end of the stub, and wherein the second end of the optical fiber is terminated at a predetermined position so as to provide for a predetermined length of the optical fiber measured from the first end of the optical fiber to the second end of the optical fiber, the second end of the optical fiber substantially adjacent to the apex of the conical portion of the aperture of the stub, and wherein the first stub length is greater than the predetermined length of the optical fiber, and wherein the conical portion of the aperture of the stub is sized so as to prevent light energy emanating from the second end of the optical fiber from impinging on a surface of the conical portion of the aperture of the stub.