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Optoelectronic Oscillators Using Direct-Modulated Semiconductor Lasers Under Strong Optical Injection
- Authors
- Sung, Hyuk-Kee; Zhao, Xiaoxue; Lau, Erwin K.; Parekh, Devang; Chang-Hasnain, Connie J.; Wu, Ming C.
- Issue Date
- May-2009
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Direct modulation; optical injection locking (OIL); optoelectronic oscillator (OEO); semiconductor laser
- Citation
- IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, v.15, no.3, pp.572 - 577
- Volume
- 15
- Number
- 3
- Start Page
- 572
- End Page
- 577
- ISSN
- 1077-260X
- Abstract
- In this paper, optoelectronic oscillators (OEOs) are demonstrated by using direct-modulated edge-emitting lasers under strong optical injection. The optically injection-locked OEO (OIL-OEO) enables a stable optoelectronic oscillation by converting an optical signal to an electrical signal through a long optical fiber loop. Low RF threshold gain of 7 dB for loop oscillation is attained by utilizing the cavity resonance amplification of an injection-locked semiconductor laser. We investigated both the open- and closed-loop characteristics of the OIL-OEO link by varying the injection locking parameters. Using this novel technique with optimized locking parameters, a 20-GHz RF signal with a phase noise of -123 dBc/Hz is successfully achieved without sophisticated frequency or temperature stabilization.
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Related Researcher
- Sung, Hyuk Kee
- Engineering (Electronic & Electrical Engineering)