Uni-traveling-carrier photodiodes for high-speed detection and broadband sensing

Itô, Hiroshi; Nagatsuma, Tadao; Ishibashi, Tadao

doi:10.1117/12.698221

Cited by 9 publications

(6 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The success at microwave frequencies has naturally led to exploration of low noise signal generation at higher frequencies, to date up to 100 GHz [17]. With photodiodes whose bandwidth can reach several hundred GHz [106], and photomixers with THz bandwidth [107], we expect continuing expansion of demonstrations and applications of low noise signal generation based on optical clocks and oscillators.…”

Section: Discussionmentioning

confidence: 99%

Exploiting shot noise correlations in the photodetection of ultrashort optical pulse trains

et al. 2013

View full text Add to dashboard Cite

We present a frequency domain model of shot noise in the photodetection of ultrashort optical pulse trains using a time-varying analysis. Shot noise-limited photocurrent power spectral densities, signal-tonoise expressions, and shot noise spectral correlations are derived that explicitly include the finite response of the photodetector. It is shown that the strength of the spectral correlations in the shot noise depends on the optical pulse width, and that these correlations can create orders-of-magnitude imbalance between the shot noise-limited amplitude and phase noise of photonically generated microwave carriers. It is also shown that only by accounting for spectral correlations can shot noise be equated with the fundamental quantum limit in the detection of optical pulse-to-pulse timing jitter.

show abstract

Section: Discussionmentioning

confidence: 99%

Exploiting shot noise correlations in the photodetection of ultrashort optical pulse trains

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The only one widely tunable MMW source is the UTC-PD. Using photomixing of two wavelength laser lights on the photodiode, the UTC-PD can generate MMWs in the range of 10 GHz to ≥1 THz in ~1 GHz steps [ 17 ]. To change the frequency, the loss time was 10 s per 1 GHz.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the non-thermal effects of exposing cells to 70–300 GHz irradiation using a widely tunable source

Yaekashiwa

Otsuki

Hayashi

et al. 2017

Journal of Radiation Research

View full text Add to dashboard Cite

This study investigated the effects of millimeter wave (MMW) irradiation with a wide range of frequencies on the proliferation and activity of normal human skin fibroblast (NB1RBG) and human glioblastoma (A172) cells. Very few studies have focused on low-power, long-term irradiation of cells with a widely tunable source. Our research examined non-thermal effects on cells exposed to radiation at low power with tunable frequencies from 70 GHz to 300 GHz. A widely tunable MMW source was set within a cell culture incubator. To avoid the effect of heat generation due to irradiation, the intensity was maintained below 10 μW and the device was arranged such that the irradiation came from underneath the cells. Irradiation was performed by sweeping from 70 GHz to 300 GHz in 1.0 GHz steps. The MMW source was positioned 100 mm away from the container in which the cells were cultured. Cells were exposed to MMWs for either 3, 70 or 94 h. Measurements of cell proliferation were made using the alternating current measurement method. We found no difference in proliferation between cells exposed to MMWs and unexposed cells. A colorimetric method using novel tetrazolium compound: MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt] was used for cell activity and cytotoxicity assays. We found no difference in cellular activity or toxicity between MMW-exposed cells and sham cells. Our study thus found no non-thermal effect as a result of exposure of cells to 70 GHz to 300 GHz of radiation.

show abstract

“…7.4. The carrier generation takes place at a thin absorption layer [13]. In addition, a diffusion block layer supports the unidirectional motion of electrons toward the N-Contact.…”

Section: The Uni-travelling Carrier Photodiode (Utc-pd)mentioning

confidence: 99%

Integrated Optical-Wireless Interface and Detection

Konstantinou

Xue

Shivan

et al. 2021

Enabling 6G Mobile Networks

View full text Add to dashboard Cite

published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User

show abstract

Uni-traveling-carrier photodiodes for high-speed detection and broadband sensing

Cited by 9 publications

References 40 publications

Exploiting shot noise correlations in the photodetection of ultrashort optical pulse trains

Exploiting shot noise correlations in the photodetection of ultrashort optical pulse trains

Investigation of the non-thermal effects of exposing cells to 70–300 GHz irradiation using a widely tunable source

Integrated Optical-Wireless Interface and Detection

Contact Info

Product

Resources

About