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40 Gb/s Field-Modulated Wavelength Converters for All-Optical Packet Switching

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4 Author(s)
Dummer, M.M. ; Dept. of Electr. & Comput. Eng., Univ. of California Santa Barbara, Santa Barbara, CA ; Klamkin, J. ; Tauke-Pedretti, A. ; Coldren, L.A.

We present a high-functionality photonic integrated circuit that performs field-modulated wavelength conversion. This device incorporates an on-chip sampled grating distributed Bragg reflector laser for wide tunability. Wavelength conversion is accomplished using a preamplified semiconductor optical amplifier photodiode receiver interconnected with a traveling-wave modulator to form a high-speed optical gate. This paper discusses the design and performance of this device, as well as its potential for optical packet switching applications. Error-free wavelength conversion is demonstrated at 40 Gb/s with 1-3 dB power penalty compared with back-to-back transmission over 22 nm of input and output tuning. Output extinction in all cases is greater than 9 dB, and conversion efficiency ranges from -2 to -6 dB over the tuning range. This device additionally demonstrates the capability for external 10 Gb/s modulation, which can be used for optical label encoding.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:15 ,  Issue: 3 )