Simultaneous multichannel NRZ-to-RZ format conversion of 4-ASK signal based on phase-intensity hybri

• 作 者: 余文科 娄采云 赵晓凡 陆丹
• 机 构: Tsinghua National Laboratory for Information Science and Technology, and State Key Laboratory of Int
• 出 处: Chinese Optics Letters
• 发表日期: 2010年09期
• 关键词: format compensation converter keying chirp return converted jitter synchronized

We propose and investigate a novel technique to realize non-return-to-zero (NRZ) to return-to-zero (RZ) format conversion of a multichannel 4-ary amplitude shift keying (4-ASK) signal. The proposed format converter composed of two modulators and a dispersion compensating fiber (DCF) is theoretically inves-tigated using numerical simulation as basis. Research shows that a 4-channel 20-Gb/s NRZ-4-ASK signal can be converted to a RZ-4-ASK signal simultaneously without wavelength shifting and signal quality degradation, with the converted signal multiplexed to 40 Gb/s.

We propose and investigate a novel technique to realize non-return-to-zero (NRZ) to return-to-zero (RZ) format conversion of a multichannel 4-ary amplitude shift keying (4-ASK) signal. composed of two modulators and a dispersion compensating fiber (DCF) is theoretically inves- tigated using numerical simulation as basis. Research shows that a 4-channel 20-Gb / s NRZ-4-ASK signal can be converted to a RZ- ASK signal simultaneously without wavelength shifting and signal quality degradation, with the converted signal multiplexed to 40 Gb / s.