Broadband Optical Frequency Comb Generation Based on a Current-modulated 1 550 nm-VCSEL Subject to Optical Injection

被引：0
|
作者：
Li G.-Y. [1 ]
Yang W.-Y. [1 ,2 ]
Wu Z.-M. [1 ]
Xia G.-Q. [1 ]
机构：
[1] School of Physical Science and Technology, Southwest University, Chongqing
[2] School of Mathematics and Physics, Chongqing University of Science and Technology, Chongqing
来源：
Guangzi Xuebao/Acta Photonica Sinica | 2019年 / 48卷 / 12期
基金：
中国国家自然科学基金;
关键词：
1 550 nm vertical-cavity surface-emitting lasers; Current modulation; Optical frequency comb; Optical injection;
D O I：
10.3788/gzxb20194812.1214003
中图分类号：
学科分类号：
摘要：
A scheme for generating broadband optical frequency comb was proposed and numerically simulated. For this scheme, a 1 550 nm vertical-cavity surface-emitting laser under a large signal current modulation with a modulation frequency of fm=f0/n (f0 is the frequency interval of two orthogonal polarization components of a 1 550 nm vertical-cavity surface-emitting laser, n is an integer) can output an optical frequency comb in the dominant Y polarization component direction while the X polarization component is suppressed. By further introducing a linearly polarized optical injection, both the two polarization components (spectral main-peak ratio less than 15 dB) can output optical frequency combs. Finally, via a polarizer the two optical frequency combs with orthogonal polarization components can be decomposed by spectral splicing to obtain a broadband optical frequency comb. Based on the spin-flip model, the optical frequency comb performances of generated by this scheme is numerically investigated. The numerical results demonstrate that, when the bias current of a 1 550 nm vertical-cavity surface-emitting laser with a threshold current of 2.6 mA is set at 11.5 mA, the Y polarization component dominates while the X polarization component was suppressed, and the ratio of the main spectral peaks of the two polarization components is more than 30 dB. Under a current modulation with a large modulation index, only the Y polarization component of the laser can realize an optical frequency comb output. By further introducing a linearly polarized optical injection, both two polarization components can output optical frequency combs by adjusting the polarization direction of the linearly polarized light. Finally, a polarizer is used to guide the two polarization components to the transparent direction of the polarizer to achieve the spectral splicing, and then an optical frequency comb with a bandwidth more than 80 GHz can be obtained. © 2019, Science Press. All right reserved.
引用
收藏
相关论文
共 28 条
  • [1] Udem T., Holzwarth R., Hansch T.W., Et al., Optical frequency metrology, Nature, 416, 6877, pp. 233-237, (2002)
  • [2] Newbury N.R., Searching for applications with a fine-tooth comb, Nature Photonics, 5, 4, pp. 186-188, (2011)
  • [3] Zhu F., Mohamed T., Strohaber J., Et al., Real-time dual frequency comb spectroscopy in the near infrared, Applied Physics Letters, 102, 12, (2013)
  • [4] Wang J.-Q., Zou X.-H., Li P.-X., Programmable microwave photonic filter based on fully digital optical frequency comb, Acta Photonica Sinica, 47, 10, (2018)
  • [5] Liu T.-Y., Zhang F.-M., Wu H.-Z., Et al., Absolute distance ranging by means of chirped pulse Interferometry, Acta Physica Sinica, 65, 2, (2016)
  • [6] Gat O., Kielpinski D., Frequency comb injection locking of mode locked lasers, New Journal of Physics, 15, 3, (2013)
  • [7] Supradeepa V.R., Weiner A.M., Bandwidth scaling and spectral flatness enhancement of optical frequency combs from phase-modulated continuous-wave lasers using cascaded four-wave mixing, Optics Letters, 37, 15, pp. 3066-3068, (2012)
  • [8] Liu H.-M., Pan W., Lu B., Et al., Generation of flat optical frequency comb based on asynchronous RF-signal-driven cascaded phase modulators, Chinese Journal of Lasers, 45, 12, (2018)
  • [9] Duills P.O., Anandarajah P.M., Zhou R., Et al., Numerical investigation into the injection-locking phenomena of gain switched lasers for optical frequency comb generation, Applied Physics Letters, 106, 21, (2015)
  • [10] Anandarajah P.M., Duill S.P.O., Zhou R., Et al., Enhanced optical comb generation by gain-switching a single-mode semiconductor laser close to its relaxation oscillation frequency, IEEE Journal of Selected Topics in Quantum Electronics, 21, 6, (2015)
123