1.55-/spl mu/m wavelength periodic traveling-wave photodetector fabricated using unitraveling-carrier photodiode structures. Y. Hirota, Ishibashi, T., & Ito, H. Journal of Lightwave Technology, 19(11):1751–1758, November, 2001.
doi  abstract   bibtex   
We report the first periodic traveling-wave photodetector fabricated by using unitraveling-carrier photodiodes (UTC-PDs). The photodetector comprises three UTC-PDs with a 0.06-/spl mu/m absorption layer that is periodically arranged along a coplanar waveguide transmission line. The photoresponse of the photodetector is three times larger than that of a single UTC-PD. A photodetector with terminal resistors at the input end achieves a 3-dB bandwidth of 115 GHz at 1.55 /spl mu/m. This is almost the same value as that for a single UTC-PD. For one without terminal resistors, the 3-dB bandwidth degrades to 56 GHz as a result of the backward-propagating microwave being reflected at the input end. These results suggest that the photodetector is well designed with both velocity and impedance matchings.
@article{y._hirota_1.55-/spl_2001,
	title = {1.55-/spl mu/m wavelength periodic traveling-wave photodetector fabricated using unitraveling-carrier photodiode structures},
	volume = {19},
	issn = {0733-8724},
	doi = {10.1109/50.964077},
	abstract = {We report the first periodic traveling-wave photodetector fabricated by using unitraveling-carrier photodiodes (UTC-PDs). The photodetector comprises three UTC-PDs with a 0.06-/spl mu/m absorption layer that is periodically arranged along a coplanar waveguide transmission line. The photoresponse of the photodetector is three times larger than that of a single UTC-PD. A photodetector with terminal resistors at the input end achieves a 3-dB bandwidth of 115 GHz at 1.55 /spl mu/m. This is almost the same value as that for a single UTC-PD. For one without terminal resistors, the 3-dB bandwidth degrades to 56 GHz as a result of the backward-propagating microwave being reflected at the input end. These results suggest that the photodetector is well designed with both velocity and impedance matchings.},
	number = {11},
	journal = {Journal of Lightwave Technology},
	author = {{Y. Hirota} and Ishibashi, T. and Ito, H.},
	month = nov,
	year = {2001},
	keywords = {photodetectors, optical communication equipment, Bandwidth, microwave photonics, Optical saturation, Capacitance, Optical waveguides, Photodetectors, photodiodes, photoresponse, 0.06 micron, 1.55 micron, 115 GHz, 56 GHz, absorption layer, backward propagating microwave reflection, Chromium, coplanar waveguide transmission line, coplanar waveguides, Coplanar waveguides, impedance matching, input end, Periodic structures, periodic traveling-wave photodetector, photodetector, PIN photodiodes, Resistors, terminal resistors, unitraveling-carrier photodiodes, velocity matching},
	pages = {1751--1758},
	file = {IEEE Xplore Abstract Record:D\:\\Zotero\\storage\\U3BJMN76\\964077.html:text/html;IEEE Xplore Full Text PDF:D\:\\Zotero\\storage\\NJE95J9A\\Hirota et al. - 2001 - 1.55-spl mum wavelength periodic traveling-wave .pdf:application/pdf}
}

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