NDLI: Ultra-broadband and low phase noise photonic millimeter-wave generation

Content Provider	IEEE Xplore Digital Library
Author	Fedderwitz, S. Rymanov, V. Weiss, M. Stohr, A. Jager, D. Steffan, A.G. Umbach, A.
Copyright Year	2008
Description	Author affiliation: u2t Photonics AG, Berlin (Steffan, A.G.; Umbach, A.) \|\| Zentrum fur Halbleitertechnik und Optoelektron., Univ. Duisburg-Essen, Duisburg (Fedderwitz, S.; Rymanov, V.; Weiss, M.; Stohr, A.; Jager, D.)
Abstract	In this paper, we report on photonic millimeter-wave generation based upon optical heterodyning as well as external modulation for ultra-broadband and low phase noise operation. Using a special broadband high-power pin photodetector (PD) we demonstrate wideband (W-band) and broadband (DC-110 GHz) optical millimeter-wave generation. For wideband operation, we utilized a wavelength-tunable dual-laser setup. Here, the PD output was coupled to a rectangular WR10 waveguide output port and a subsequent limiting W-band amplifier. With this setup, we achieved wideband tunability within the W-band from 69 GHz to 112 GHz with a maximum output power variation below 3 dB and a saturated output power of 0 dBm. The 1dB compression point is about -4 dBm and the dynamic range is about 32 dB. For broadband operation, we have coupled the photodetector to a coaxial W1 output port allowing continuous frequency tunability from DC to 110 GHz with a maximum power penalty of only 6 dB and a maximum output power of -3 dBm. For generating low phase noise optical mm-wave signals, we have used an external modulator instead of the dual-laser. For an optically generated 100 GHz signal we have achieved a phase noise level of about -70 dBc/Hz at 10 kHz offset.
Starting Page	283
Ending Page	286
File Size	489407
Page Count	4
File Format	PDF
ISBN	9781424421688
DOI	10.1109/MWP.2008.4666692
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-09-09
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photonics Optical amplifiers Power amplifiers Power generation Optical waveguides Phase noise Optical fiber amplifiers
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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