We present a new component for optical connector applications, a single piece of photochemically machinable glass (Corning Fotoform) that is etched to produce thin pillars (∼55-µm diameter, 700 µm long) extending from both sides of a thin (170-µm-thick) supporting plane. Thus a two-dimensional optical fiber array is formed without any assembly. We measure a −2.5-dB insertion loss and less than −30-dB cross talk using a laser (approximately 3° focusing angle) and a −7.8-dB insertion loss and −18-dB cross talk using a collimated lamp (approximately 30° focusing angle). On tilting the array the outgoing beam is deflected, which indicates strong guiding.
© 1992 Optical Society of America
K. W. Goossen and J. A. Walker, "Monolithic optical fiber stub array," Opt. Lett. 17, 381-383 (1992)