All-Optical Bit-Rate Flexible NRZ-to-RZ Conversion Using an SOA-Loop Mirror and a CW Holding Beam

作者：Lee Hyuek Jae^*

来源：Journal of the Optical Society of Korea, 2016, 20(4): 464-469.

DOI：10.3807/JOSK.2016.20.4.464

• All-optical data format conversion
• Non-return-to-zero (NRZ)
• Return-to-zero (RZ)
• wavelength division multiplexing (WDM)
• Optical time division multiplexing (OTDM)

All-optical non-return-to-zero (NRZ) -to- return-to-zero (RZ) data-format conversion has been successfully demonstrated using a semiconductor optical amplifier in a fiber-loop mirror (so-called SOA-loop mirror) with a continuous-wave (CW) holding beam. The converted RZ signal after pulse compression has been used to create a 40 Gb/s OTDM (Optical Time Division Multiplexing) signal. Here is proposed an NRZ-to-RZ conversion method without any additional optical clocks, unlike conventional methods based on optical AND logic. In addition, it has the merit of operating at various bit-rate speeds without any controlling device. Moreover, it has a simple structure, and it can be used for all-optical bit-rate-flexible clock recovery.

• 出版日期2016-8