Time-of-flight range detection using low-frequency intensity modulation of a cw laser diode: application to fiber length measurement

2008 ◽  
Vol 47 (9) ◽  
pp. 093602 ◽  
Author(s):  
Richard Ferriere
Keyword(s):  
Laser Diode ◽  
Fiber Length ◽  
Time Of Flight ◽  
Low Frequency ◽  
Intensity Modulation ◽  
Length Measurement ◽  
Cw Laser ◽  
Flight Range ◽  
Frequency Intensity

Accurate Fiber Length Measurement Using Time-of-Flight Technique

2016 ◽  
Vol 37 (2) ◽  
Author(s):  
Osama Terra ◽  
Hatem Hussein
Keyword(s):  
Fiber Length ◽  
High Speed ◽  
Time Of Flight ◽  
National Physical Laboratory ◽  
Length Measurement ◽  
Time Interval ◽  
Physical Laboratory ◽  
Electro Optic ◽  
Optical Time ◽  
Measured Length

AbstractFiber artifacts of very well-measured length are required for the calibration of optical time domain reflectometers (OTDR). In this paper accurate length measurement of different fiber lengths using the time-of-flight technique is performed. A setup is proposed to measure accurately lengths from 1 to 40 km at 1,550 and 1,310 nm using high-speed electro-optic modulator and photodetector. This setup offers traceability to the SI unit of time, the second (and hence to meter by definition), by locking the time interval counter to the Global Positioning System (GPS)-disciplined quartz oscillator. Additionally, the length of a recirculating loop artifact is measured and compared with the measurement made for the same fiber by the National Physical Laboratory of United Kingdom (NPL). Finally, a method is proposed to relatively correct the fiber refractive index to allow accurate fiber length measurement.

Prototype fiber Bragg Grattings (FBG) sensor based on intensity modulation of the laser diode low frequency vibrations measurement

2016 ◽  
Author(s):  
Andi Setiono ◽  
Rini Khamimatul Ula ◽  
Dwi Hanto ◽  
Bambang Widiyatmoko ◽  
Retno Wigajatri Purnamaningsih
Keyword(s):  
Laser Diode ◽  
Low Frequency ◽  
Intensity Modulation ◽  
Fbg Sensor

scholarly journals A power-saving modulation technique for time-of-flight range imaging sensors

2011 ◽  
Author(s):  
Richard M. Conroy ◽  
Adrian A. Dorrington ◽  
Andrew D. Payne ◽  
Rainer Künnemeyer ◽  
Michael J. Cree
Keyword(s):  
Time Of Flight ◽  
Power Saving ◽  
Range Imaging ◽  
Modulation Technique ◽  
Flight Range ◽  
Imaging Sensors

Low-frequency intensity noise in semiconductor lasers

10.1109/3.188 ◽  
1988 ◽  
Vol 24 (5) ◽  
pp. 724-736 ◽  
Author(s):  
R.J. Fronen ◽  
L.K.J. Vandamme
Keyword(s):  
Semiconductor Lasers ◽  
Low Frequency ◽  
Intensity Noise ◽  
Frequency Intensity

scholarly journals Improved measurement linearity and precision for AMCW time-of-flight range imaging cameras

2010 ◽  
Vol 49 (23) ◽  
pp. 4392 ◽  
Author(s):  
Andrew D. Payne ◽  
Adrian A. Dorrington ◽  
Michael J. Cree ◽  
Dale A. Carnegie
Keyword(s):  
Time Of Flight ◽  
Range Imaging ◽  
Flight Range
Sign in / Sign up

Export Citation Format

Share Document