Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Keith J. Williams"'
Publikováno v:
IEEE Journal of Microwaves, Vol 4, Iss 3, Pp 521-536 (2024)
We derive a general expression for the mth-order intercept point (IPm) of an analog RF receive beamforming system comprising multiple inputs, an array of nonlinear elements, and a single output. Given parallel inputs, the general IPm expression inclu
Externí odkaz:
https://doaj.org/article/a3416300ab7547249e387c584c1f2788
Autor:
Ergun Simsek, Alexander S. Hastings, David A. Tulchinsky, Keith J. Williams, Curtis R. Menyuk
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 3, Pp 1-6 (2024)
This research introduces an approximation method for computing the temperature distribution in photodetectors operating in a steady state under optical excitation. The derived temperature profile is utilized to assess the impact of temperature variat
Externí odkaz:
https://doaj.org/article/5d32f64849504d3f985cbd53b2cc5bb4
Autor:
Seyed Ehsan Jamali Mahabadi, Thomas F. Carruthers, Curtis R. Menyuk, Jason D. McKinney, Keith J. Williams
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 4, Pp 1-7 (2021)
We use a drift-diffusion model that includes the effect of bleaching to study the impact of nonlinear distortion in a $p$-$i$-$n$ photodetector (PD) on RF-modulated frequency combs. This work complements a similar study that we carried out for a modi
Externí odkaz:
https://doaj.org/article/91f31f38b9f842c0bacc7cadf7061095
Autor:
Yue Hu, Curtis R. Menyuk, Xiaojun Xie, Meredith N. Hutchinson, Vincent J. Urick, Joe C. Campbell, Keith J. Williams
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 2, Pp 1-11 (2017)
We calculate the amplitude-to-phase (AM-to-PM) noise conversion in a modified unitraveling carrier photodetector. We obtained two nulls as measured in the experiments, and we explain their origin. The nulls appear due to the transit time variation wh
Externí odkaz:
https://doaj.org/article/cc0c099f74cf435189faeb2f4c448e94
Publikováno v:
IEEE Photonics Journal, Vol 5, Iss 4, Pp 5501211-5501211 (2013)
This paper expands upon the RF photonic theory of electrooptic phase and intensity modulation detection as seen when coupled in tandem with an asymmetric Mach-Zehnder interferometer through the derivation of power transfer functions for such optical-
Externí odkaz:
https://doaj.org/article/4656696e41c847de86f81a14818ce8b1
Autor:
Ergun Simsek, Ishraq Md Anjum, Thomas F. Carruthers, Curtis R. Menyuk, Joe C. Campbell, David A. Tulchinsky, Keith J. Williams
Publikováno v:
IEEE Transactions on Electron Devices. :1-6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::072b4722656281b37f6149977f8900bd
https://doi.org/10.1109/ted.2023.3275553
https://doi.org/10.1109/ted.2023.3275553
Autor:
Ergun Simsek, Ishraq Md Anjum, Thomas F. Carruthers, Curtis R. Menyuk, David A. Tulchinsky, Keith J. Williams, Joe C. Campbell
Publikováno v:
2022 IEEE Photonics Conference (IPC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dda37310fe9445b19a5e02facc6c0274
https://doi.org/10.1109/ipc53466.2022.9975461
https://doi.org/10.1109/ipc53466.2022.9975461
Autor:
Curtis R. Menyuk, Jason D. McKinney, Seyed Ehsan Jamali Mahabadi, Thomas F. Carruthers, Keith J. Williams
Publikováno v:
IEEE Photonics Journal. 13:1-7
We use a drift-diffusion model that includes the effect of bleaching to study the impact of nonlinear distortion in a $p$ - $i$ - $n$ photodetector (PD) on RF-modulated frequency combs. This work complements a similar study that we carried out for a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e45e04843cb9370df429b39709f8ee1a
https://doi.org/10.1109/jphot.2021.3091039
https://doi.org/10.1109/jphot.2021.3091039
Autor:
Seyed Ehsan Jamali Mahabadi, Thomas F. Carruthers, Curtis R. Menyuk, Jason D. McKinney, Keith J. Williams
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 4, Pp 1-7 (2021)
We use a drift-diffusion model that includes the effect of bleaching to study the impact of nonlinear distortion in a $p$-$i$-$n$ photodetector (PD) on RF-modulated frequency combs. This work complements a similar study that we carried out for a modi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::9e7fba2770ea92040bb1d12101ff539c
https://ieeexplore.ieee.org/document/9461627/
https://ieeexplore.ieee.org/document/9461627/
Autor:
Jason D. McKinney, Frank Bucholtz, Matthew J. Mondich, Ian M. Maize, Joseph M. Singley, Keith J. Williams
Publikováno v:
Journal of Lightwave Technology. 38:5893-5907
A multi-channel wideband group delay-based photonic receive-mode beamformer implemented with bulk fiber-based true-time delays, discrete flat-top arrayed waveguide gratings (AWGs), and a linear receive antenna array is presented. The frequency-indepe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b031047aa31dd1fe3d09b4ce4ed8c32
https://doi.org/10.1109/jlt.2020.3005900
https://doi.org/10.1109/jlt.2020.3005900