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Experimental demonstration of a clock recovery scheme utilizing nonlinear relaxation oscillation in directly modulated lasers
Author(s) -
Yan Minhui,
Chen ChihHung,
Xu QingYang,
Huang WeiPing
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24436
Subject(s) - clock recovery , oscillation (cell signaling) , signal (programming language) , injection locking , microwave , laser , clock signal , electronic engineering , nonlinear system , scheme (mathematics) , computer science , physics , optics , engineering , telecommunications , chemistry , mathematics , biochemistry , mathematical analysis , quantum mechanics , programming language , jitter
An experimental demonstration was presented for a clock recovery scheme suitable for low‐cost short‐haul optical communications. This scheme utilizes the nonlinear relaxation oscillation in a directly modulated laser, which creates clock information in modulated nonreturn‐to‐zero optical signals. At the receiver, an injection locked oscillator is employed to extract and restore the clock. Eye diagrams of both received data signal and recovered clock demonstrate the capability of recovering clock from the data signal with an almost closed eye at ∼9 Gbps. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1654–1657, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24436