Q-Factor-Based Level Design for Photonic ATM Switches (Joint Special Issue on Photonics in Switching : Systems and Devices)
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概要
- 論文の詳細を見る
A photonic ATM switch based on wavelength-division multiplexing will include several lossy passive devices, erbium-doped fiber amplifiers, and semiconductor optical arnplifiers (SOAs) in a cascade configuration for fast switching of ns order. Its level diagram, which is very different from those of optical transmission links, has not been adequately studied. This paper investigates the concept of basing the level design of the photonic asynchronous-transfer-mode (ATM) switch we are developing on its Q-factor. First, we derive formulation of the Q-factor in a single PD and a dual-PD in a Manchester-encoded signal, which has several merits in packet switching and that we believe will become popular in photonic packet switches. Using this formula, we show an example of the level-diagram design including the Q factor calculation in an optical combiner and distributor section without SOA in our photonic ATM switch. Next, we showed experimentally that the pattern effect in SOAs can be suppressed by using a Manchester-encoded signal. Finally, we confirm that the allowable minimum level diagram in the switch can be based on a simple Q calculation and easy measurement of a bit error rate (BER) in a back-to-back configuration when using a Manchester encoded signal. These results show that basing the level design of photonic ATM switches on the Q factor is feasible when using a Manchester signals. This approach can be applied to various types of photonic packet switches.
- 社団法人電子情報通信学会の論文
- 1999-02-25
著者
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Shibata Yasuo
Ntt Optical Network Systems Laboratories
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Yamada Y
Department Of Materials Science And Engineering Yamaguchi University
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MINO Shinji
NTT Optical Network Systems Laboratories
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MATSUNAGA Tohru
NTT Optical Network Systems Laboratories
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MISAWA Akira
NTT Optical Network Systems Laboratories
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YAMADA Yoshuaki
NTT Optical Network Systems Laboratories
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HABARA Keishi
NTT Optical Network Systems Laboratories
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Mino Shinji
Ntt Opto-electronics Laboratories
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Misawa Akira
Graduate School Of Science Osaka University
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Habara K
Ntt Corp. Musashino‐shi Jpn
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Matsunaga T
Fukuoka Inst. Of Technol. Fukuoka‐shi Jpn
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Yamada Y
Tohoku Univ. Sendai‐shi Jpn
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