All-Optical Analog-to-Digital Conversion Based on Polarization Modulation and Wavelength-Dependent Birefringence

作者：Wang Muguang^*; Fu Yu; Shao Chenguang; Li Tangjun; Jian Shuisheng

来源：Applied Physics Express, 2013, 6(9): 092201.

DOI：10.7567/APEX.6.092201

A novel scheme of all-optical analog-to-digital conversion (ADC) based on polarization modulation and wavelength-dependent birefringence is proposed and experimentally demonstrated. A polarization modulator and a polarization beam splitter are employed to realize polarization modulation and polarization modulation-to-intensity modulation conversion. Thanks to the wavelength-dependent birefringence in a section of a polarization-maintaining fiber, phase-shift optical quantization is obtained by adjusting the wavelength spacing of a multiwavelength pulse laser array. A proof-of-concept experiment is performed. An all-optical ADC with 16 quantization levels and an effective number of bits of 3.7 is demonstrated by using 8 different wavelengths with identical wavelength interval.

• 出版日期2013-9
• 单位北京交通大学