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Titolo:
Transmission performance of chirp-controlled signal by using semiconductoroptical amplifier
Autore:
Watanabe, T; Sakaida, N; Yasaka, H; Kano, F; Koga, M;
Indirizzi:
NTT, Network Innovat Labs, Yokosuka, Kanagawa 2390847, Japan NTT YokosukaKanagawa Japan 2390847 bs, Yokosuka, Kanagawa 2390847, Japan
Titolo Testata:
JOURNAL OF LIGHTWAVE TECHNOLOGY
fascicolo: 8, volume: 18, anno: 2000,
pagine: 1069 - 1077
SICI:
0733-8724(200008)18:8<1069:TPOCSB>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTEGRATED DFB LASER; ELECTROABSORPTION MODULATOR; NEGATIVE-CHIRP; STANDARD FIBER; DISPERSION; PARAMETER; GB/S;
Keywords:
chirp; electroabsorption (EA) modulators; optical fibers; phase modulation; semiconductor optical amplifiers (SOA's);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Watanabe, T NTT, Photon Labs, Ibaraki, Osaka 3191193, Japan NTT Ibaraki Osaka Japan 3191193 Ibaraki, Osaka 3191193, Japan
Citazione:
T. Watanabe et al., "Transmission performance of chirp-controlled signal by using semiconductoroptical amplifier", J LIGHTW T, 18(8), 2000, pp. 1069-1077

Abstract

We examine the fiber transmission performance of the optical signal whose chirp is controlled by utilizing phase modulation in semiconductor optical amplifier (SOA) with both simulations and experiments. This chirp control technique converts a positive chirp created by electroabsorption (EA) modulator into negative chirp, which reduces the waveform degradation due to the chromatic dispersion in transmission over standard single-mode fiber (SMF),It also provides an optical gain that is sufficient to compensate the insertion loss of the EA modulator. We investigate how the chirp control is affected by the input power to the SOA and the carrier lifetime of the SOA, Asthe SOA input power increases, the negative chirp becomes large, while thewaveform is largely distorted due to gain saturation. However, the waveform distortion at high SOA input powers can be shaped by using a frequency discriminator. The acceleration of the carrier lifetime also reduces the waveform distortion due to gain saturation. We demonstrate that the chirp control technique is effective even for a high bit rate optical signal up to 10 Gb/s, when the carrier lifetime is expedited by optical pumping.

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Documento generato il 08/08/20 alle ore 02:56:56