A fast cw-THz spectrometer using fiber stretchers

Roggenbuck, A.; Deninger, A.; Thirunavukkuarasu, Komalavalli; Schmitz, Holger; Marx, Jennifer; Vidal, Ernesto; Langenbach, M.; Grüninger, M.

doi:10.1109/irmmw-thz.2011.6104971

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…Fiber stretchers can be used for rapid phase modulation. In a dual-stretcher configuration setup, two identical fiber stretchers are included in the transmitter and receiver arm [ 48 , 119 ]. It can reduce the sensitivity to thermal drifts and doubles the modulation amplitude compared to a single stretcher setup.…”

Section: Silicon Photonics For Thz Techniquesmentioning

confidence: 99%

A Review on Terahertz Technologies Accelerated by Silicon Photonics

Xie

Zhou

et al. 2021

Nanomaterials

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In the last couple of decades, terahertz (THz) technologies, which lie in the frequency gap between the infrared and microwaves, have been greatly enhanced and investigated due to possible opportunities in a plethora of THz applications, such as imaging, security, and wireless communications. Photonics has led the way to the generation, modulation, and detection of THz waves such as the photomixing technique. In tandem with these investigations, researchers have been exploring ways to use silicon photonics technologies for THz applications to leverage the cost-effective large-scale fabrication and integration opportunities that it would enable. Although silicon photonics has enabled the implementation of a large number of optical components for practical use, for THz integrated systems, we still face several challenges associated with high-quality hybrid silicon lasers, conversion efficiency, device integration, and fabrication. This paper provides an overview of recent progress in THz technologies based on silicon photonics or hybrid silicon photonics, including THz generation, detection, phase modulation, intensity modulation, and passive components. As silicon-based electronic and photonic circuits are further approaching THz frequencies, one single chip with electronics, photonics, and THz functions seems inevitable, resulting in the ultimate dream of a THz electronic–photonic integrated circuit.

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Section: Silicon Photonics For Thz Techniquesmentioning

confidence: 99%

A Review on Terahertz Technologies Accelerated by Silicon Photonics

Xie

Zhou

et al. 2021

Nanomaterials

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“…Also it requires a collimated beam in the THz path. 70,[121][122][123] Furthermore, modulating the THz path strongly affects the standing waves, i.e., parasitic interference effects, which arise from multiple reflections of the THz beam. 68,124 Because of these standing waves, significant deviations from a cosine-like behavior of photoelectric current appears if the of the THz path is varied.…”

Section: Fiber Stretcher Systemsmentioning

confidence: 99%

“…The piezoelectric actuator is driven by an AC voltage with an amplitude of typically 100 to 500 V. In Ref. 121, CW THz spectrometer is realized with two fiber stretchers at the two optical arms of the THz setup. Both the THz amplitude and phase are determined from 0.06 to 1.8 THz with a 1-GHz step size in less than 10 min.…”

Section: Fiber Stretcher Systemsmentioning

confidence: 99%

“…106 The fiber stretcher data correspond to the envelope of the oscillating pattern recorded by the frequency scan. 121 The ambiguity in m can be resolved in a broadband measurement. If we, for instance, neglect multiple reflections within the sample of thickness d, one finds ϕðνÞ ≈ 2πðn − 1Þd ν c , i.e., ϕ extrapolates to zero for ν → 0 and is expected to increase linearly with ν in a frequency range with constant refractive index n. Finally, knowing T and ϕ as well as the sample thickness d, one can calculate the complex index of refraction.…”

Section: Fiber Stretcher Systemsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Review of photomixing continuous-wave terahertz systems and current application trends in terahertz domain

Safian¹,

Ghazi²,

Mohammadian

2019

Opt. Eng.

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Within the last two decades, terahertz systems have become a well-established tool in scientific laboratories and industrial research and development departments. Unlike the methods of pulsed terahertz radiation that mainly rely on ultrafast optical technology, the technology behind continuous-wave terahertz sources and detectors has a long history involving many different types of technical schemes. The intent is to provide a brief review of the continuous-wave terahertz systems that are based on photomixing and current application trends in the field of terahertz technology.

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State-of-the-art in terahertz continuous-wave photomixer systems

Deninger¹

2013

Handbook of Terahertz Technology for Imaging, Sensing and Communications

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A fast cw-THz spectrometer using fiber stretchers

Cited by 3 publications

References 10 publications

A Review on Terahertz Technologies Accelerated by Silicon Photonics

A Review on Terahertz Technologies Accelerated by Silicon Photonics

Review of photomixing continuous-wave terahertz systems and current application trends in terahertz domain

State-of-the-art in terahertz continuous-wave photomixer systems

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