Free-space optical interconnection modules for two-dimensional photonic very large scale integration circuitry based on microlenses and gradient-refractive-index lenses
V. Baukens et al., Free-space optical interconnection modules for two-dimensional photonic very large scale integration circuitry based on microlenses and gradient-refractive-index lenses, OPT ENG, 40(11), 2001, pp. 2431-2441
We present different configurations for a compact free-space optical interc
onnection module by combining two radial gradient-refractive-index lenses a
nd/or two arrays of refractive microlenses. Based on our findings with ray
tracing and radiometric analysis, we discuss how we have selected the prope
r optical system configurations and how we have chosen the different design
parameters to optimally accommodate different types of optoelectronic emit
ters such as LEDs, microcavity LEDs, and vertical-cavity surface-emitting l
asers. We focused on maximizing optical coupling efficiencies and misalignm
ent tolerances while minimizing interchannel crosstalk. (C) 2001 Society of
Photo-Optical Instrumentation Engineers.