&lt;title&gt;Free-space optical interconnect and processing demonstrators with arrays of light-emitting thyristors&lt;/title&gt;

Thienpont, Hugo; Goulet, Alain; Baukens, Valerie; Koczyk, P.; Buczyński, Ryszard; Nieuborg, Nancy; Kirk, Andrew G.; Heremans, Paul; Borghs, Gustaaf; Kuijk, Maarten; Vounckx, Roger; Veretennicoff, Irina

doi:10.1117/12.271038

Cited by 7 publications

(3 citation statements)

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“…Finally, using a much larger and denser thyristor array and a grating with a matched fan-out we can increase the size of the processed image considerably, e.g. the GRIN-based optical system could image an array of approximately 3000 differential pairs of thyristors with dimensions of 20×30 µm 2 [10].…”

Section: Resultsmentioning

confidence: 99%

Fast optical thresholding with an array of optical thyristor differential pairs

Buczyński

Ortega

Szoplik

et al. 1999

J. Opt. A: Pure Appl. Opt.

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In this paper an optoelectronic system for fast grey-level image decomposition into binary slices is presented. To perform thresholding we take advantage of the differential nature of optical thyristors and compare the light level of the image pixels with that of a reference intensity. For the input a grey-level image was generated using a liquid crystal spatial light modulator (SLM) and, for the reference intensity, a vertical-cavity surface-emitting laser light source combined with a diffractive fan-out element was used. A decomposition frame rate of 1.0 kHz has been obtained for images with five grey levels.

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Section: Resultsmentioning

confidence: 99%

Fast optical thresholding with an array of optical thyristor differential pairs

Buczyński

Ortega

Szoplik

et al. 1999

J. Opt. A: Pure Appl. Opt.

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“…The first of two examples, which we discuss in this paper, is a sub-module of a 3D free-space optical system dedicated to interconnect arrays of optical thyristor differential pairs [22] in a highly efficient way. It is indeed important that transmission losses are minimized, because the bandwidth of such data channels can strongly depend on the optical power budget.…”

Section: An Optical Imaging System To Interconnect Arrays Of Optical mentioning

confidence: 99%

Free-space optical interconnection modules for 2D photonic-VLSI circuitry based on microlenses and GRINs

et al. 2000

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In this paper we present different configurations for a compact free-space optical interconnection (FSOI) module by combining two radial gradient refractive index lenses (GRIN) and/or two arrays of refractive microlenses. Based on our findings with ray-tracing and radiometric analysis we discuss how we have selected the proper optical system configurations and how we have chosen the different design parameters to optimally accommodate different types of opto-electronic emitters such as LEDs, micro-cavity LEDs and VCSELs. We hereby focused on maximizing optical coupling efficiencies and misalignment tolerances while minimizing inter-channel cross-talk. Furthermore we discuss the experimental optical characteristics of two such prototype modules that we completed together with the first experimental results of their use in parallel data communication demonstrator systems.

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“…As an optical switching device, the optical thyristor has many advantages, such as fast response, low switching energy, low power consumption, high ON/OFF contrast, and good expandability to 2D monolithic arrays. [1][2][3][4][5][6][7][8][9] Most importantly, the optical thyristor not only operates as an optical switch but also emits light, which distinguishes it from other optical switches such as self-electrooptic effect devices (SEEDs). In many applications, however, relatively slow switching speed is the major limiting factor for optical thyristors.…”

Section: Introductionmentioning

confidence: 99%

AlGaAs/GaAs NpnP Depleted Optical Thyristor Using Bottom Mirror Layers

Choi¹,

Kim²,

Choi³

et al. 2005

Jpn. J. Appl. Phys.

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A novel fully depleted optical thyristor (DOT) using quarter wavelength reflector stacks (QWRS) is proposed. QWRS are employed as bottom mirrors to enhance the emission efficiency as well as optical sensitivity. To analyze their switching characteristics, s-shapes nonlinear current-voltage curves were simulated and the reverse full-depletion voltages (V neg s) of DOTs were obtained as a function of semiconductor parameters using a finite difference method associated with a currentoriented method. The fabricated DOTs show sufficient nonlinear s-shaped current-voltage (I-V) characteristics, and switching voltage changes with and without bottom mirrors are 1.82 V and 1.52 V, respectively. Compared to a conventional DOT, this device with the bottom mirror shows about 20% and 20-50% enhancement in switching voltage changes and spontaneous emission efficiency, respectively.

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<title>Free-space optical interconnect and processing demonstrators with arrays of light-emitting thyristors</title>

Cited by 7 publications

References 0 publications

Fast optical thresholding with an array of optical thyristor differential pairs

Fast optical thresholding with an array of optical thyristor differential pairs

Free-space optical interconnection modules for 2D photonic-VLSI circuitry based on microlenses and GRINs

AlGaAs/GaAs NpnP Depleted Optical Thyristor Using Bottom Mirror Layers

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