Measuring high-frequency responses of an electro-optic phase modulator based on dispersion induced phase modulation to intensity modulation conversion

Shangjian Zhang; Heng Wang; Yani Wang; Xinhai Zou; Yali Zhang; Shuang Liu; Yong Liu

doi:10.1117/12.2070833

3 December 2014 Measuring high-frequency responses of an electro-optic phase modulator based on dispersion induced phase modulation to intensity modulation conversion

Shangjian Zhang, Heng Wang, Yani Wang, Xinhai Zou, Yali Zhang, Shuang Liu, Yong Liu

Author Affiliations +

Proceedings Volume 9267, Semiconductor Lasers and Applications VI; 92670H (2014) https://doi.org/10.1117/12.2070833
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

We investigate the phase modulation to intensity modulation conversion in dispersive fibers for measuring frequency responses of electro-optic phase modulators, and demonstrate two typical measurements with cascade path and fold-back path. The measured results achieve an uncertainty of less than 2.8% within 20 GHz. Our measurements show stable and repeatable results because the optical carrier and its phase-modulated sidebands are affected by the same fiber impairments. The proposed method requires only dispersive fibers and works without any small-signal assumption, which is applicable for swept frequency measurement at different driving levels and operating wavelengths.

Citation Download Citation

Shangjian Zhang, Heng Wang, Yani Wang, Xinhai Zou, Yali Zhang, Shuang Liu, and Yong Liu "Measuring high-frequency responses of an electro-optic phase modulator based on dispersion induced phase modulation to intensity modulation conversion", Proc. SPIE 9267, Semiconductor Lasers and Applications VI, 92670H (3 December 2014); https://doi.org/10.1117/12.2070833

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