Photon-Counting Chirped Amplitude Modulation Lidar With 1.5-GHz Gated InGaAs/InP APD

Author

Zhaohui Li ; Zeyu Bao ; Yafan Shi ; Baicheng Feng ; Wu, E. ; Guang Wu ; Heping Zeng

Author_Institution

State Key Lab. of Precision Spectrosc., East China Normal Univ., Shanghai, China

Volume

27

Issue

6

fYear

2015

fDate

March15, 15 2015

Firstpage

616

Lastpage

619

Abstract

We demonstrated a photon-counting chirped amplitude modulation (CAM) Lidar at 1550 nm. In the previous studies, the CAM bandwidth was limited <;30 MHz due to the large dead time of the single-photon detectors. In our CAM Lidar system, an InGaAs/InP avalanche photodiode was operated in 1.5-GHz sine-wave gated Geiger mode to reduce the dead time to 6.4 ns. As a result, the CAM bandwidth exceeded 200 MHz, while the modulation period was 0.5 ms, leading to a direct distance accuracy of 0.12 m in daylight environment. This system presented a potential for high accuracy and eye-safe CAM Lidar system.

Keywords

III-V semiconductors; amplitude modulation; avalanche photodiodes; chirp modulation; gallium arsenide; indium compounds; optical radar; photodetectors; photon counting; InGaAs-InP; frequency 1.5 GHz; gated indium gallium arsenide-indium phosphide avalanche photodiode; photon-counting chirped amplitude modulation LIDAR; sine-wave gated Geiger mode; single-photon detectors; time 6.4 ns; wavelength 1550 nm; Accuracy; Bandwidth; Computer aided manufacturing; Distance measurement; Laser radar; Modulation; Photonics; Avalanche photodiodes (APDs); Lidar; Photon-counting; avalanche photodiodes (APDs);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2386354

Filename

7003977