Variable Symbol-Rate DPSK Receiver Based on Silicon Photonics Coupled-Resonator Delay Line
Lightwave Technology, Journal of （2014）
摘要
We present a compact (<; 0.65 mm2) silicon photonics variable-delay receiver for DPSK optical transmission systems consisting of a Mach-Zehnder interferometer (MZI) loaded with an integrated tunable delay line. The delay line is realized by using a thermally actuated coupled-resonator optical waveguide (CROW) in reflective configuration, providing a continuous control of the MZI delay from 66 to 102 ps, thus allowing the optimization of the receiver performance for the detection of DPSK signals at any symbol rates between 9.8 and 15 Gsym/s. The tuning scheme is simple, requiring the control of only two ring resonators, and enables the active compensation of thermal effects induced by silicon nonlinearity at high input power. The scalability of the proposed scheme to 100 Gsym/s systems and the maximum achievable tunability range are also discussed.
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关键词
mach-zehnder interferometers,differential phase shift keying,integrated optics,nonlinear optics,optical control,optical delay lines,optical receivers,optical resonators,optical signal detection,optical transmitters,optical tuning,optical waveguides,silicon,thermo-optical devices,crow,dpsk optical transmission systems,dpsk signal detection,mzi delay,mach-zehnder interferometer,si,active compensation,compact silicon photonics variable-delay receiver,continuous control,input power,integrated tunable delay line,maximum achievable tunability range,receiver performance optimization,reflective configuration,ring resonator control,silicon nonlinearity,silicon photonics coupled-resonator delay line,symbol rates,thermal effects,thermally actuated coupled-resonator optical waveguide,time 66 ps to 102 ps,tuning scheme,variable symbol-rate dpsk receiver,coupled resonators,integrated optics devices,phase modulation,photonic integrated circuits,silicon photonics,tunable delay lines
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