Journal ArticleDOI
All-fiber video distribution (AFVD) systems using SCM and EDFA techniques
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TLDR
In this article, the design and performance of all-fiber video distribution (AFVD) systems based on AM/FM FDM subcarrier multiplexing (SCM) and erbium-doped fiber amplifiers (EDFAs) are investigated.Abstract:
this paper describe the design and performance of all-fiber video distribution (AFVD) systems based on AM/FM FDM subcarrier multiplexing (SCM) and erbium-doped fiber amplifiers (EDFAs). The impact of applying EDFAs to SCM analog video distribution systems is investigated. AM/FM hybrid systems, which can simultaneously distribute 11 AM TV channels and 50 FM TV channels are proposed and discussed. Four-stage amplifier-branch transmission experiments are introduced. The construction and performance of a newly designed 50-channel FM tuner are also presented.read more
Citations
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Patent
WDM optical network with passive pass-through at each node
TL;DR: In this article, the authors proposed a protocol independent optical transmission medium with passive filters at each node for dropping a band associated therewith and passively forwarding other bands through the transmission medium.
Patent
WDM optical network and switching node with pilot tone communications
TL;DR: In this paper, the authors proposed a protocol independent optical transmission medium (PIM) in which a passive filter at each node drops a band associated therewith and passively forwards other bands through the transmission medium.
Journal ArticleDOI
Reduction of dispersion-induced distortion in SCM transmission systems by using predistortion-linearized MQW-EA modulators
TL;DR: In this paper, the effect of low-chirp MQW-EA modulators on subcarrier multiplexing (SCM) optical transmission systems is investigated.
Patent
Optical signal amplification apparatus and an optical fiber transmission system using the same
TL;DR: The optical signal amplification apparatus of as mentioned in this paper includes a plurality of optical fiber amplifiers connected in series, each optical fiber amplifier including an optical fiber doped with rare earth ions; and a pumping light source for emitting pumping light for exciting the optical fiber.
Journal ArticleDOI
Generation and transmission of FM and /spl pi//4 DQPSK signals at microwave frequencies using harmonic generation and optoelectronic mixing in Mach-Zehnder modulators
T. Young,J. Conradi,W.R. Tinga +2 more
TL;DR: In this paper, a method of using the harmonic generation and optoelectronic mixing properties of Mach-Zehnder modulators to generate modulated subcarrier signals at high-order harmonics of the input signals is presented.
References
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Journal ArticleDOI
Erbium-doped glasses for fiber amplifiers at 1500 nm
TL;DR: In this paper, material-dependent properties influencing the performance of fiber amplifiers are reviewed together with the available data for Er/sup 3+/. The major glass types potentially useful in this application are considered and compared to silica.
Journal ArticleDOI
Chromatic dispersion induced distortion of modulated monochromatic light employing direct detection
TL;DR: In this paper, the spectrum of an IM and a combined intensity-frequency modulated (IM-FM) monochromatic light source has been generated and the amplitudes of the modulated carrier and the first three pairs of sidebands are plotted showing the influence of IM on an FM signal.
Journal ArticleDOI
Subcarrier multiplexed lightwave systems for broad-band distribution
TL;DR: In this article, the application of microwave subcarrier multiplexing (SCM) systems to both passive and optically amplified distribution networks is discussed, and the general features of SCM systems, electrooptic components that have been used in the system experiments described here, including laser intensity noise and noise due to intermodulation products.
Journal ArticleDOI
A wide-FSR waveguide double-ring resonator for optical FDM transmission systems
Kazuhiro Oda,N. Takato,H. Toba +2 more
TL;DR: In this paper, a wide free-spectral-range (FSR) waveguide double-ring resonator (DRR) is investigated for use in optical frequency-division multiplexing (OFDM) transmission systems.
Journal ArticleDOI
Subcarrier multiplexing for lightwave networks and video distribution systems
TL;DR: Applications for subcarrier multiplexing include a variety of analog and digital lightwave transmission systems that include multiuser interactive local area networks and multichannel digital, FM, and AM-VSB (vestigal sideband) video distribution systems.
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