论文信息 - Generation of Flat Optical-Frequency Comb Using Cascaded Intensity and Phase Modulators

Generation of Flat Optical-Frequency Comb Using Cascaded Intensity and Phase Modulators

A scheme using one intensity modulator and two phase modulators driven directly by sinusoidal waveform to generate an optical-frequency comb (OFC) is experimentally demonstrated. It is relatively simple, where Bragg grating or specially tailored waveforms are not used. By setting the ratio of direct-current bias to half-wave voltage and phase shifts between sinusoidal waveform applied on the intensity and two phase modulators at appropriate values, 29 comb lines with spectral power variation less than 1.5 dB at 10 GHz are obtained. And the scheme has adjustability; a flat-top OFC with frequency spacing of 9.5-10 GHz is achieved.

Minyu Yao | Yujie Dou | Hongming Zhang

[1] J P Heritage,et al. Demonstration of high-fidelity dynamic optical arbitrary waveform generation , 2010, 2010 IEEE Photinic Society's 23rd Annual Meeting.

[2] Rui Wu,et al. Generation of very flat optical frequency combs from continuous-wave lasers using cascaded intensity and phase modulators driven by tailored radio frequency waveforms. , 2010, Optics letters.

[3] Minyu Yao,et al. En/Decoder for Spectral Phase-Coded OCDMA System Based on Amplitude Sampled FBG , 2008, IEEE Photonics Technology Letters.

[4] Minyu Yao,et al. Improvement of flatness of optical frequency comb based on nonlinear effect of intensity modulator. , 2011, Optics letters.

[5] A.J. Seeds,et al. 1.8-THz bandwidth, zero-frequency error, tunable optical comb generator for DWDM applications , 1999, IEEE Photonics Technology Letters.

[6] A. Weiner,et al. Optical arbitrary waveform processing of more than 100 spectral comb lines , 2007 .

[7] J. Kani,et al. Flattened optical multicarrier generation of 12.5 GHz spaced 256 channels based on sinusoidal amplitude and phase hybrid modulation , 2001 .