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Optical Clock Recovery Scheme for a High Bit Rate Nonreturn-to-zero Signal using Fiber Bragg Grating Filters
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- Authors
- Jaemyoung Lee, Hyunwoo Cho, Sang-Kyu Lim, Sang Soo Lee, Je Soo Ko
- Issue Date
- 2005-02
- Citation
- Optical Engineering, v.44, no.2, pp.1-2
- Language
- English
- Type
- Journal Article
- Abstract
- For optical clock recovery of nonreturn-to-zero (NRZ) signals more than 40 Gb/s, we propose and experimentally demonstrate a simple clock recovery scheme using beat processing. Through the proposed scheme, we square the adjustment range of the variable optical attenuator (VOA) and achieved an enhanced clock-to-noise ratio (CNR) of more than 15 dB in the experiment, compared to a system without the proposed scheme. © 2005 Society of Photo-Optical Instrumentation Engineers.