We present an analysis of crosstalk in aligned and misaligned free-space optical interconnect (FSOI) systems. On the basis of a generalized diffraction integral formula, an analytical expression of irradiation distribution for FSOI systems and a convenient approach to calculate crosstalk noise signal ratios (CNSR) are proposed. Simulations are performed to analyze the factors affecting the CNSR. The analyses indicate that small beam quality factor and wide channel pitch will significantly improve performance of the FSOIs. Furthermore, the displacement of the transmitter microlens array will affect the interconnection distance much more significantly than that of the receiver microlens array.
© 2010 Optical Society of America
Optics in Computing
Original Manuscript: August 6, 2009
Revised Manuscript: November 24, 2009
Manuscript Accepted: December 2, 2009
Published: January 19, 2010
Wenhua Hu, Xiujian Li, Jiankun Yang, and Di Kong, "Crosstalk analysis of aligned and misaligned free-space optical interconnect systems," J. Opt. Soc. Am. A 27, 200-205 (2010)