中国物理B ›› 2019, Vol. 28 ›› Issue (5): 54206-054206.doi: 10.1088/1674-1056/28/5/054206

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Mid-infrared supercontinuum generation and its application on all-optical quantization with different input pulses

Yan Li(李妍), Xinzhu Sang(桑新柱)   

  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2018-12-05 修回日期:2019-02-17 出版日期:2019-05-05 发布日期:2019-05-05
  • 通讯作者: Yan Li E-mail:liyanllyy@126.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61307109 and 61475023).

Mid-infrared supercontinuum generation and its application on all-optical quantization with different input pulses

Yan Li(李妍), Xinzhu Sang(桑新柱)   

  1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2018-12-05 Revised:2019-02-17 Online:2019-05-05 Published:2019-05-05
  • Contact: Yan Li E-mail:liyanllyy@126.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61307109 and 61475023).

摘要:

Supercontinuum generation (SCG) and its application on all-optical quantization of all-optical analog-to-digital conversions (AOADCs) at the mid-infrared region in an AlGaAs strip waveguide are investigated numerically. The simulation results show that when the parabolic pulse is input, not only broader and higher-coherence SCG is obtained and a higher effective number of bits (ENOB) can be achieved, compared with the input pulse with hyperbolic-secant and Gaussian shaping. A four-bit quantization resolution is achieved along with a signal-to-noise ratio of 24.02 dB and an ENOB of 3.99 bit, and the required input peak power is 760 mW.

关键词: mid-infrared, supercontinuum generation, all-optical quantization

Abstract:

Supercontinuum generation (SCG) and its application on all-optical quantization of all-optical analog-to-digital conversions (AOADCs) at the mid-infrared region in an AlGaAs strip waveguide are investigated numerically. The simulation results show that when the parabolic pulse is input, not only broader and higher-coherence SCG is obtained and a higher effective number of bits (ENOB) can be achieved, compared with the input pulse with hyperbolic-secant and Gaussian shaping. A four-bit quantization resolution is achieved along with a signal-to-noise ratio of 24.02 dB and an ENOB of 3.99 bit, and the required input peak power is 760 mW.

Key words: mid-infrared, supercontinuum generation, all-optical quantization

中图分类号:  (Nonlinear optics)

  • 42.65.-k
42.65.Wi (Nonlinear waveguides) 78.55.Cr (III-V semiconductors)