Synchronized clock multiplication through optical subharmonic injection locking of an optoelectronic oscillator |
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Authors: | Dan Lu Xiaofan Zhao Caiyun Lou Li Huo |
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Institution: | TN List and State Key Laboratory on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, PR China |
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Abstract: | We propose a remote synchronization scheme based on optoelectronic oscillators (OEO) and external modulators. Synchronized clock multiplication is demonstrated by using optical subharmonic injection locking technique. A 10-GHz slave OEO was successfully synchronized by 2.5-GHz/Gbps injecting optical clock pulse train, return-to-zero (RZ) signal and non-return-to-zero (NRZ) signal, respectively. The synchronization scheme is advantageous since it does not require strong nonlinearity presented in the master signal, and is capable of generating electrical and optical clock with small add-on phase noise. |
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Keywords: | Optoelectronic oscillator Synchronization Subharmonic injection locking Clock multiplication |
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