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has been cited by the following article:

• TITLE: High Performance Asymmetric Three Corrugation-Pitch-Modulated DFB Lasers Suitable for Stable Single Longitudinal Mode Operation

  AUTHORS: Qiang Zuo, Jianyi Zhao, Zhihao Wang, Xin Chen, Wen Liu

  KEYWORDS: Corrugation-Pitch-Modulated; Distributed Feedback Laser; Mode Selectivity; Flatness

  JOURNAL NAME: Optics and Photonics Journal, Vol.3 No.2B, July 18, 2013

  ABSTRACT: This paper presents an optimized asymmetric three corrugation-pitch-modulated DFB laser (3CPM-DFB) with extremely high mode selectivity(△αL= 0.97) and low flatness(F = 0.009), which are two key parameters to indicate the laser’s single longitudinal mode(SLM) performance. In threshold analysis, the optimization process based on transfer matrix method is demonstrated to maximize △αLand minimize F simultaneously. In the above-threshold regime, the evolutions of △αLandlongitudinal distribution of photon density with injection current are evaluated. More importantly, nanoimprint lithography which was proved an efficient way to fabricate DFB gratings can provide completely same simple fabrication procedure for both 3CPM grating and conventional uniform grating. So the big practical value of 3CPM-DFB can be expected because of its advanced performance and easy manufacturability.