High-Resolution FMCW Reflectometry Using a Single-Mode Vertical-Cavity Surface-Emitting Laser

Author

Iiyama, Koichi ; Matsui, Shin-ichiro ; Kobayashi, Takao ; Maruyama, Takeo

Author_Institution

Sch. of Electr. & Comput. Eng., Kanazawa Univ., Kanazawa, Japan

Volume

23

Issue

11

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

703

Lastpage

705

Abstract

High-resolution frequency-modulated continuous-wave (FMCW) reflectometry is realized by using a single-mode vertical-cavity surface-emitting laser (VCSEL) as a frequency-swept light source for the first time. The optical frequency of the VCSEL is swept by the injection current modulation. The experimental spatial resolution of 250 μm was achieved, which is the best value when an injection current tuned laser diode is used as a frequency-swept light source.

Keywords

frequency modulation; laser cavity resonators; laser tuning; light sources; measurement by laser beam; optical modulation; reflectometry; semiconductor lasers; surface emitting lasers; VCSEL; frequency-swept light source; high-resolution FMCW reflectometry; high-resolution frequency-modulated continuous-wave reflectometry; injection current modulation; injection current tuned laser diode; single-mode vertical-cavity surface-emitting laser; spatial resolution; Frequency modulation; Laser tuning; Optical interferometry; Optical variables control; Spatial resolution; Vertical cavity surface emitting lasers; Frequency-modulated continuous-wave (FMCW) reflectometry; optical frequency domain reflectometry (OFDR); reflectometry; vertical-cavity surface-emitting laser (VCSEL);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2131124

Filename

5735191