Aamer M, Griol A, Brimont A, Gutierrez A M, Sanchis P, Håkansson A
Nanophotonics Technology Center, Universitat Politecnica Valencia, Camino de Vera s/n, 46022, Valencia, Spain.
Opt Express. 2012 Jun 18;20(13):14698-704. doi: 10.1364/OE.20.014698.
We present an optimized design for a 10G- differential-phase-shift-keyed (DPSK) receiver based on a silicon-on-insulator (SOI) unbalanced tunable Mach-Zehnder interferometer (MZI) switch in sequence with a Mach-Zehnder delay interferometer (MZDI). The proposed design eliminates the limitation in sensitivity of the device produced by the waveguide propagation losses in the delay line. A 2.3 dB increase in receiver sensitivity at a bit-error-rate (BER) of 10(-9) is experimentally measured over a standard implementation. The enhanced sensitivity is achieved with zero power consumption by tuning the operating wavelength or with less than 5 mW for a fixed wavelength using microheaters. Also the foot-print of the device is minimized to 0.11 mm(2) by the use of compact spirals.
我们展示了一种基于绝缘体上硅（SOI）不平衡可调马赫曾德尔干涉仪（MZI）开关与马赫曾德尔延迟干涉仪（MZDI）串联的10G差分相移键控（DPSK）接收机的优化设计。所提出的设计消除了延迟线中波导传播损耗对器件灵敏度的限制。在误码率（BER）为10^(-9)时，通过实验测量发现，与标准实现相比，接收机灵敏度提高了2.3 dB。通过调谐工作波长可实现零功耗下的灵敏度增强，或者使用微加热器在固定波长下功耗小于5 mW。此外，通过使用紧凑螺旋结构，器件的占地面积最小化至0.11 mm²。
