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Noncollinear four-wave mixing in a broad area semiconductor optical amplifier

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7 Author(s)
Zhu, Daniel X. ; Department of Electrical Engineering, Center for Photonic Technology, University of Southern California, Los Angeles, California 90089-0483 ; Dubovitsky, S. ; Steier, William H. ; Uppal, Kushant
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A high-efficiency noncollinear four-wave mixing in a broad area traveling-wave semiconductor optical amplifier is demonstrated. A key feature of the demonstrated configuration is the ability to isolate generated sidebands from the inputs. A wave-mixing efficiency of +8.2 dB with 22.6 dB of sideband isolation at 6° separation between the two pump beams was obtained. The dependence of the efficiency on pump detuning, separation angle, and probe wavelength was also investigated. Use of a high quality traveling-wave amplifier enabled us to achieve ripple-free broadband operation over 37 nm. The demonstrated configuration is a key to practical implementations of four-wave mixing based devices. © 1997 American Institute of Physics.

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Applied Physics Letters  (Volume:70 ,  Issue: 16 )