Prototype 250 GHz Bandwidth Chip to Chip Electrical Interconnect, Characterized With Ultrafast Optoelectronics

Jo, Jeong Sang; Jeon, Tae-In; Grischkowsky, D.

doi:10.1109/tthz.2013.2251930

Cited by 9 publications

(10 citation statements)

References 27 publications

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“…Numerous metal- and dielectric-based waveguides234567891011121314151617181920212223242526272829303132333435363738394041424344 and devices, such as fiber Bragg gratings (FBGs)454647 and couplers4849505152535455, have been studied. However, restistive losses of metals and in particular high absorption of most dielectric materials make design of low loss THz waveguides and devices challenging.…”

mentioning

confidence: 99%

Dielectric tube waveguides with absorptive cladding for broadband, low-dispersion and low loss THz guiding

Bao

Nielsen

Bang

et al. 2015

Sci Rep

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Research on terahertz waveguides is experiencing a tremendous growth due to their importance for compact and robust THz systems. However, designing compact, broadband, mechanically stable and environmentally shielded THz waveguides is still a challenge due to high losses of both metals and dielectrics in this frequency range. Here we report on a novel twist on the classical tube waveguide where we deliberately introduce a thick and highly lossy cladding layer. By this we attenuate the field in the cladding and thus prevent interference with the core field. This mechanism breaks the well-known ARROW guiding mechanism, and as a result, extremely broad bandwidth and low dispersion can be achieved with a very simple design. Since the main part of the field propagates inside the air-core, the propagation loss is still kept at a very low level. Simulations, analytical modelling and experiments verify our findings. The proposed THz waveguide is robust, insensitive to external perturbation and easy to handle, and thus the design represents a significant advance of the field of THz dielectric waveguides suitable for the 0.3–1 THz band which in the future will be important for ultrafast wireless communication systems.

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mentioning

confidence: 99%

Dielectric tube waveguides with absorptive cladding for broadband, low-dispersion and low loss THz guiding

Bao

Nielsen

Bang

et al. 2015

Sci Rep

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“…With increasing curve depth, the peak-to-peak amplitudes of the first pulses at 0 cm and 2.9 cm curve depth are 87.8 and 144.0 pA, respectively. In contrast with the large attenuation loss of bare two-wire lines [7], the Teflon covered two-wire lines suffer no attenuation loss when the lines are curved. The corresponding spectra of the THz signals are shown in Fig.…”

Section: Measurement and Analysis Of Teflon Covered Two-wire Linesmentioning

confidence: 89%

“…Two 3.0-cm-long commercial tungsten (W) probes and the waveguide system used for this measurement are the same as used in the previous report [7]. When a THz dipole antenna is used as a short pulse emitter, the two-wire line has the advantage of allowing direct coupling of the generated THz radiation pulse to the two metal wires, similar to the case of early demonstrations of ps pulse generation on coplanar transmission lines [13].…”

Section: Methodsmentioning

confidence: 99%

“…Many different waveguides and transmission lines are used for guiding THz electromagnetic waves These include metal tubes [1], parallel plates [2], coaxial cables [3], two-metal wires and single metal wires [4][5][6][7]. In order to use any of these waveguides for practical applications, single-mode propagation and a good guiding property are generally required.…”

Section: Introductionmentioning

confidence: 99%

“…This type of waveguide has been experimentally demonstrated and theoretically studied in the microwave region [11,12]. Recently two-wire waveguides have been experimentally and theoretically studied for guided propagation in the THz frequency range [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of THz Pulse Propagation on Teflon Covered Two-Wire Lines

Jeon

2015

Journal of the Optical Society of Korea

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We report efficient direct coupling of THz dipole antenna pulses onto air spaced two-wire transmission lines and Teflon covered two-wire lines. The air spaced two-wire lines show TEM mode propagation with very small group velocity dispersion (GVD) and relatively low attenuation. The Teflon covered two-wire lines showed comparatively much higher attenuation and GVD. However, the Teflon covered two-wire lines show a very good guiding property when the lines are curved. Although the lines are circled only 5.0 cm in diameter, there is no additional attenuation compared to straight the lines.

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