Modelling and design of a travelling-wave electro-optic modulator on InP

Pascher, WW; Besten, den Jh Jan Hendrik; Caprioli, Daniele; Leijtens, Xjm Xaveer; Smit, MK Meint; Dijk, van R Robert

doi:10.1023/a:1022917605267

Cited by 5 publications

(5 citation statements)

References 7 publications

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“…It was reported that this monolithic tunable optical comb generator created, at its output, 28 comb lines using a 5 dB criteria and repetition frequencies around 5 GHz. It should be noted that the modulation depth of the implemented phase modulators can be improved if capacitive-loaded traveling-wave electrodes [29][30][31] are used, and, according to the tests run, more voltage can be applied, hence a wider comb-span can be achieved. The main function of this stage is to generate a comb as wide as possible, to reach a span in the order of THz, as made in ref.…”

Section: Comb Source Stagementioning

confidence: 99%

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Betancur-Pérez

Martín-Mateos

Dios

et al. 2020

Sensors

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In this work, we present a multipurpose photonic integrated circuit capable of generating multiheterodyne complex Dual-Combs (DC) THz signals. Our work focuses on translating the functionality of an electro-optic tunable DC system into a photonic chip employing standard building blocks to ensure the scalability and cost efficiency of the integrated device. The architecture we analyze for integration is based on three stages: a seed comb, a mode selection stage and a DC stage. This final DC stage includes a frequency shifter, a key element to improve the final detection of the THz signals and obtain real-time operation. This investigation covers three key aspects: (1) a solution for comb line selection on GHz spaced combs using OIL or OPLL on photonic chips is studied and evaluated, (2) a simple and versatile scheme to produce a frequency shift using the double sideband suppressed carrier modulation technique and an asymmetric Mach Zehnder Interferometer to filter one of the sidebands is proposed, and (3) a multipurpose architecture that can offer a versatile effective device, moving from application-specific PICs to general-purpose PICs. Using the building blocks (BBs) available from an InP-based foundry, we obtained simulations that offer a high-quality Dual-Comb frequency shifted signal with a side mode suppression ratio around 21 dB, and 41 dB after photodetection with an intermediate frequency of 1 MHz. We tested our system to generate a Dual-Comb with 10 kHz of frequency spacing and an OOK modulation with 5 Gbps which can be down-converted to the THz range by a square law detector. It is also important to note that the presented architecture is multipurpose and can also be applied to THz communications. This design is a step to enable a commercial THz photonic chip for multiple applications such as THz spectroscopy, THz multispectral imaging and THz telecommunications and offers the possibility of being fabricated in a multi-project wafer.

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Section: Comb Source Stagementioning

confidence: 99%

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Betancur-Pérez

Martín-Mateos

Dios

et al. 2020

Sensors

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“…If we assume that the whole i-Q(1.25) film layer is depleted by applying the reverse bias voltage, the refractive index changes (n) as a function of the applied voltage is shown in figure [7]. …”

Section: Electro-optic Effects On Inp Materialsmentioning

confidence: 99%

“…The layer stack is previously used to monolithic integrate active and passive optical components such as laser [6], modulator [7], and photodetector [8]. The device has very smal dimensions of about 6.4 23 (m) 2 and a drive voltage of about 7 volts.…”

Section: Introductionmentioning

confidence: 99%

InP-based photonic crystal electro-optic modulator

Nikoufard

Amadeh

2015

Optik - International Journal for Light and Electron Optics

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“…The versatility of the technique is such that it can be applied to numerous physical configurations relevant to modern optical and microwave technology, such as complex microwave structures [9][10][11][12][13][14], photonic components [15][16][17][18]. The MoL can also handle periodic structures [19][20][21] and stratified backgrounds [22][23][24]. Further, subtle effects at the interface between optics and microwave, like for example in traveling wave photodetectors, can also be investigated with the MoL [24].…”

Section: Introductionmentioning

confidence: 99%

“…The MoL can also handle periodic structures [19][20][21] and stratified backgrounds [22][23][24]. Further, subtle effects at the interface between optics and microwave, like for example in traveling wave photodetectors, can also be investigated with the MoL [24].…”

Section: Introductionmentioning

confidence: 99%

Efficient Scattering Calculations in Complex Backgrounds

Martin

2004

AEU - International Journal of Electronics and Communications

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Abstract:The utilization of the Green's tensor associated with a complex optical background (surface, cavity or stratified medium) leads to a dramatic reduction of the computation effort associated with scattering calculations in that background. This approach is illustrated with examples where a mere change of the background Green's tensor makes possible the investigation of completely different physical situations. Two different discretization approaches are compared and similarities between the Green's tensor technique and the Method of Lines are emphasized; in the latter, the utilization of analytic solutions in one specific direction also reduces the discretization of the system.

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Modelling and design of a travelling-wave electro-optic modulator on InP

Cited by 5 publications

References 7 publications

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

InP-based photonic crystal electro-optic modulator

Efficient Scattering Calculations in Complex Backgrounds

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