Clock distribution using a synthetic HOE with multiple fan-out at IR-wavelength

Zarschizky, H.; Karstensen, H.; Staudt, A.; Klement, E.

doi:10.1117/12.20684

Cited by 4 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical clock distribution [11][12][13][14] was one of the first implementations of optical interconnections in the computing realm, especially for MCMs, in which the optical clock has to be broadcast at high frequencies. Figure 16.16 shows two different approaches.…”

Section: Optical Clock Distributionmentioning

confidence: 99%

Digital Optics Application Pools

Kress

Meyrueis

2009

Applied Digital Optics

View full text Add to dashboard Cite

Section: Optical Clock Distributionmentioning

confidence: 99%

Digital Optics Application Pools

Kress

Meyrueis

2009

Applied Digital Optics

View full text Add to dashboard Cite

“…These measures are derived from several mutual constraints, for example the LD beam characteristic, the LD and PD locations and the respective beam angles the DOE has to handle. For a detailed discussion of this design problem see [5]. The crucial figure from which all possible arrangements have to be selected is the minimum feature size of the diffraction pattern of the DOE.…”

Section: Set -Upmentioning

confidence: 99%

<title>Multifacet diffractive mirror for optical clock signal distribution</title>

Zarschizky

Gerndt

Stemmer

et al. 1993

Holographics International '92

Self Cite

View full text Add to dashboard Cite

Optical clock signal distribution has widely been discussed to be an attractive way to reduce the clock skew in high speed digital systems. For short interconnection lengths, especially for chip level clock distribution, free space systems using diffractive optical elements (DOEs) have specific advantages. The optoelectromc pathway described in this paper consists of a GaAs laser diode, a microetched silicon mirror, a facetted diffractive element and silicon photodiodes.The key element of the clock distribution demonstrator is the diffractive element (the mirror), which matches set-up requirements like compactness, an off-axis geometry and use of an unshaped laser diode beam. The diffractive mirror is computer generated, it is direct E-beam written and its diffraction pattern is dry etched into the surface of a silicon wafer. It is shown that the whole set-up meets the demands of alignment accuracy in an excellent way. This is achieved by the very good imaging characteristic of the DOE and by an alignment technique based on precision mounting of microetched silicon components.

show abstract

“…Some of these design methods use spatially multiplexed Fresnel lenses [2], phase multiplexed Fresnel lenses [3] (analytically or iteratively) or Fourier fan-out elements [4], [5] and [6] (Damman gratings, Gerchberg-Saxton optimised phase element), or series of high frequency linear or crossed gratings (polarization sensitive elements) [7], but none of them accomodate all the previous requirements. Spatially multiplexed Fresnel lenses induce large spot sizes and non uniform spots intensity profiles.…”

Section: Introductionmentioning

confidence: 99%

<title>Tolerancing and packaging analysis for the optimization of a diffractive element for synchronous planar optical clock distribution</title>

Kress¹,

Meyrueis

1996

SPIE Proceedings

View full text Add to dashboard Cite

We propose a new method to design and optimise a Diffractive Optical Element (DOE) that performs a quasi-synchronous optical clock distribution within a glass slab bounded onto an MCM substrate, by internal reflections. This design avoids clock skew at very high frequencies, even for non-symetrical detector placements. and does not need any slab back side element alignments. The method is based on a phase retreival algorithm that propagates wavefronts by the mean of two different numerical kernels between n different spatial planes. We propose also a method to optimise the detector placement on the MCM module, in order to have the DOE design to work efficiently. We have simulated the effects of typical fabrication and packaging tolerances on the performances of the overall system. A 16 phase level demonstrator is being fabricated on Thomson LCR's MCM specifications and will be tested.

show abstract

Clock distribution using a synthetic HOE with multiple fan-out at IR-wavelength

Cited by 4 publications

References 0 publications

Digital Optics Application Pools

Digital Optics Application Pools

<title>Multifacet diffractive mirror for optical clock signal distribution</title>

<title>Tolerancing and packaging analysis for the optimization of a diffractive element for synchronous planar optical clock distribution</title>

Contact Info

Product

Resources

About