Abstract
We demonstrate clock recovery with ultralow timing jitter by using a novel self-starting optoelectronic oscillator that is based on an electroabsorption modulator in a fiber extended cavity. The oscillator simultaneously generates a 10-GHz-rate microwave signal and a train of 15-ps optical pulses with ∼40-fs timing jitter in the 100-Hz to 1-MHz range. Under direct optical-injection locking of the oscillator, we demonstrate simultaneous error-free extraction of both the electrical and the optical clocks of 10-GHz rate from either a single-channel 10-Gb/s return-to-zero data stream or a four-channel 40-Gb/s optical time-division-multiplexed data stream.
Original language | English (US) |
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Pages (from-to) | 263-265 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 16 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2004 |
Funding
Manuscript received April 29, 2003; revised August 14, 2003. This work was supported by the National Science Foundation under Grants ANI-0123495, ECS-0000241, and IGERT DGE-9987577. The authors are with the Center for Photonic Communication and Computing, Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL 60208-3118 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/LPT.2003.819370
Keywords
- Electroabsorption modulator (EAM)
- Optical clock recovery
- Optical demultiplexing
- Optical injection locking
- Optoelectronic oscillator (OEO)
- Timing jitter
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering