1994 IEEE MTT-S International Microwave Symposium Digest (Cat. No.94CH3389-4)

DOI: 10.1109/mwsym.1994.335441

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Highly linear and transparent 3-18 GHz optical microwave link

Theodor Nielsen

¹

,

²

,

T. Christensen³

et al.

Abstract: Abstract

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“…This experiment demonstrates transparent transmission of a standard FM video 7.6-GHz radio-link signal [25]. The link setup is shown in Fig.…”

Section: A Experimental Setupmentioning

confidence: 99%

Multifunctional fiber-optic microwave links based on remote heterodyne detection

¹

,

²

,

³

et al. 1998

IEEE Trans. Microwave Theory Techn.

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Abstract-The multifunctionality of microwave links based on remote heterodyne detection (RHD) of signals from a dual-frequency laser transmitter is discussed and experimentally demonstrated in this paper. Typically, direct detection (DD) in conjunction with optical intensity modulation is used to implement fiber-optic microwave links. The resulting links are inherently transparent. As opposed to DD links, RHD links can perform radio-system functionalities such as modulation and frequency conversion in addition to transparency. All of these three functionalities are presented and experimentally demonstrated with an RHD link based on a dual-frequency laser transmitter with two offset phase-locked semiconductor lasers. In the modulating link, a 1-Gb/s baseband signal is QPSK modulated onto a 9-GHz RF carrier. The frequency converting link demonstrates up-conversion of a 100-Mb/s PSK signal from a 2-GHz carrier to a 9-GHz carrier with penalty-free transmission over 25 km of optical fiber. Finally, the transparent link transmits a standard FM video 7.6-GHz radio-link signal over 25 km of optical fiber without measurable distortion.

“…This experiment demonstrates transparent transmission of a standard FM video 7.6-GHz radio-link signal [25]. The link setup is shown in Fig.…”

Section: A Experimental Setupmentioning

confidence: 99%

Multifunctional fiber-optic microwave links based on remote heterodyne detection

¹

,

²

,

³

et al. 1998

IEEE Trans. Microwave Theory Techn.

Self Cite

View full text Add to dashboard Cite

Abstract-The multifunctionality of microwave links based on remote heterodyne detection (RHD) of signals from a dual-frequency laser transmitter is discussed and experimentally demonstrated in this paper. Typically, direct detection (DD) in conjunction with optical intensity modulation is used to implement fiber-optic microwave links. The resulting links are inherently transparent. As opposed to DD links, RHD links can perform radio-system functionalities such as modulation and frequency conversion in addition to transparency. All of these three functionalities are presented and experimentally demonstrated with an RHD link based on a dual-frequency laser transmitter with two offset phase-locked semiconductor lasers. In the modulating link, a 1-Gb/s baseband signal is QPSK modulated onto a 9-GHz RF carrier. The frequency converting link demonstrates up-conversion of a 100-Mb/s PSK signal from a 2-GHz carrier to a 9-GHz carrier with penalty-free transmission over 25 km of optical fiber. Finally, the transparent link transmits a standard FM video 7.6-GHz radio-link signal over 25 km of optical fiber without measurable distortion.

Chromatic dispersion in fiber-optic microwave and millimeter-wave links

¹

,

²

,

³

1996

IEEE Trans. Microwave Theory Techn.

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No abstract

Coherent fiber-optic links for transmission and signal processing in microwave and millimeter-wave systems

¹

International Topical Meeting on Microwave Photonics. Technical Digest (Including High Speed Photonics Components Workshop) (Ca

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The principles of coherent fiber-optic links are presented and the transmission and signal processing capabilities offered to microwave and millimeter-wave systems are discussed. Furthermore, an overview of implemented transmitter types and link experiments is given.

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