NRZ-OOK-to-RZ-BPSK modulation-format conversion using SOA-MZI wavelength converter

Mishina, Ken; Maruta, Akihiro; Mitani, Seiji; Miyahara, T.; Ishida, K.; Shimizu, K.; Hatta, Tatsuo; Motoshima, K.; Kitayama, Ken‐ichi

doi:10.1109/jlt.2006.882255

Cited by 97 publications

(49 citation statements)

References 16 publications

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“…Using one MZI-SOA, all-optical modulation format conversion from NRZ-OOK to RZ-PSK was described and experimentally verified by Mishina et al [81]. A diagram of the proposed technique is depicted in Figure 2.17.…”

Section: Mzi-soamentioning

confidence: 98%

“…Thus, the NRZ-OOK data signal is converted to an RZ-BPSK data signal. The assist light is launched to suppress the rapid change of carriers, which induces frequency chirp and amplitude fluctuations [81]. For higher bitrates conversion, above 10 Gbit/s, the MZI-SOA is usually configured to work in a "push-pull" configuration, in which the control signal are injected in the upper and the lower arms of the of the interferometer (ports #A and #D in Figure 2.17, respectively), with a time delay between them.…”

Section: Mzi-soamentioning

confidence: 99%

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Advanced optical modulation and format conversion

2014

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Section: Mzi-soamentioning

confidence: 98%

Section: Mzi-soamentioning

confidence: 99%

Advanced optical modulation and format conversion

2014

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“…Currently, research have also been extended to all-optical format conversions between on-off keying (OOK) and phase-shift keying (PSK) [11,12].…”

Section: Introductionmentioning

confidence: 99%

All-optical NRZ-to-RZ reconversion from the red-chirped NRZ signal generated by the RZ-to-NRZ converter using an SOA-loop-mirror

Lee

2014

IEICE Electron. Express

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Abstract:This paper aims to demonstrate experimentally a new all-optical non-return-to-zero (NRZ) to return-to-zero (RZ) data format reconversion from the red-chirped NRZ signal, generated by the RZ-to-NRZ converter, using a semiconductor optical amplifier in a fiber loop mirror (so-called an SOA-loop-mirror). The primary merit of the proposed NRZ-to-RZ reconversion is that no additional optical clock is required in the process, unlike other conventional methods. While the optical power penalty for the RZ-to-NRZ conversion using an SOA-loop-mirror was 1.64 dB, the proposed NRZ-to-RZ reconversion penalty was 0.6 dB compared to that of the original input RZ signal.

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“…Because of the high nonlinear coefficient and strong cross-phase modulation (XPM) of SOA, it is extensively used as the core component. The SOA combining with Mach-Zehnder interferometer to realize NRZ-OOK to RZ-BPSK format conversion was proposed by Mishina et al [2]. However, the scheme was very complex, in which four SOAs were needed to generate the phase shift, and the phase matching was necessary.…”

Section: Introductionmentioning

confidence: 99%