Optoelectronic-VLSI packaging with polarization-selective computer-generated holograms

Abstract

We present what is believed to be the first packaged module incorporating polarization-based beam-forming optics integrated with an optoelectronic-VLSI device. The chip has multiple quantum-well modulators and detectors that are flip-chip bonded onto a silicon CMOS integrated circuit. In the assembled module a polarization-selective computer-generated hologram converts linearly polarized light into a two-dimensional spot array to illuminate the output modulators. The lenslets do not interfere with the input data or the reflected output, which is orthogonally polarized. We demonstrate a 9x10 modulator array, showing good spot-intensity uniformity and registration with modulators.

Free-space reconfigurable optical interconnection based on polarization-switching VCSELs and polarization-selective diffractive optical elements

“…To this aim, polarizing highspatial frequency gratings in GaAs [1], polarizing holographic optical elements in DCG [21, polarization-selective computer-generated holograms in LiNbO3 [3] and polarization-selective diffractive optical elements in calcite [41 have been developed. Polarization-selective, or anisotropic, diffractive optical elements (ADOEs) implementing calcite in combination with an index-matching polymer have proven to have several advantages over LiNbO3 [41.…”

Optical interconnect systems for communication and computing

“…Simultaneously, the feature size of silicon VLSI technology decreases resulting in increased bandwidth that will become available for computation, increasing the demand for communication bandwidth, and thus relying on development of novel interconnect technologies [l-31. In this paper we will discuss three examples on using novel diffractive optics with multifunctionality [4-161 and nonlinear optical technologies [ 17,181 for realization of optical interconnections for communication and computing applications.For our first example, we will introduce polarization selective diffractive optical elements [4, 5, 7, 111 and describe their application for packaging the optical interconnections to an optoelectronic VLSI device with a two dimensional U 0 arrays [14]. This example uses threedimensional optical interconnection technologies via free-space propagation in the direction normal to the planar surface consisting of optical transmitter and receivers.…”

“…For our first example, we will introduce polarization selective diffractive optical elements [4, 5, 7, 111 and describe their application for packaging the optical interconnections to an optoelectronic VLSI device with a two dimensional U 0 arrays [14]. This example uses threedimensional optical interconnection technologies via free-space propagation in the direction normal to the planar surface consisting of optical transmitter and receivers.…”