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Compensating Multimode Fiber Dispersion Using Adaptive Optics

Compensating Multimode Fiber Dispersion Using Adaptive Optics. Joseph M. Kahn. Stanford University Department of Electrical Engineering www-ee.stanford.edu/~jmk. Acknowledgments. Collaborators J. P. Wilde S. P. Boyd S. Fan M. A. Horowitz I. Lyubomirsky (Infinera Corporation)

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Compensating Multimode Fiber Dispersion Using Adaptive Optics

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  1. Compensating Multimode Fiber Dispersion Using Adaptive Optics Joseph M. Kahn Stanford UniversityDepartment of Electrical Engineering www-ee.stanford.edu/~jmk

  2. Acknowledgments Collaborators • J. P. Wilde • S. P. Boyd • S. Fan • M. A. Horowitz • I. Lyubomirsky (Infinera Corporation) • D. F. Welch (Infinera Corporation) Graduate Students • R. A. Panicker • M. Bagher Shemirani • X. Shen • E. Alon (now at UC Berkeley) • V. Stojanovic (now at MIT)

  3. Fourier Lens Iout(t) Photo-Detector AdaptiveAlgorithm Clock & DataRecovery Rec.Data Multimode Fiber Spatial LightModulator Iin(t) ISIEstimation Trans.Data OOKModulator ISI ObjectiveFunction Transmitter Receiver Low-Rate Feedback Channel +0.8 +0.4 Modal Dispersion Compensation Using Adaptive Optics +0.1 -0.3

  4. Experimental Setup X. Shen, J. M. Kahn and M. A. Horowitz, Optics Letters, vol. 30, no. 22, pp. 2985-2987, Nov. 15, 2005.

  5. 11 km, Worst SOP, 10 mm Offset Launch,Before Adaptation

  6. 11 km, Worst SOP, 10 mm Offset Launch,One Iteration Using Step Training Sequence

  7. 11 km, Worst SOP, 10 mm Offset Launch,After One Iteration Using Step Training Sequence

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