DFB laser dynamics and noise characterization by high resolution and high dynamic range measurements of its CW optical spectrum

2006 ◽  
Author(s):  
Asier Villafranca ◽  
José A. Lázaro ◽  
Javier Lasobras ◽  
Ignacio Garcés
Keyword(s):  
High Resolution ◽  
Optical Spectrum ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Range Measurements ◽  
Laser Dynamics ◽  
Dfb Laser ◽  
High Dynamic ◽  
Noise Characterization

High-dynamic-range linear analog data links (1-20 GHz) using room temperature DFB laser diodes

2004 ◽  
Author(s):  
Ian H. White ◽  
Peter Hartmann ◽  
Jonathan D. Ingham ◽  
Matthew Webster ◽  
David Wake ◽  
...  
Keyword(s):  
Room Temperature ◽  
Dynamic Range ◽  
Laser Diodes ◽  
High Dynamic Range ◽  
Linear Analog ◽  
Data Links ◽  
Dfb Laser ◽  
High Dynamic

A high-dynamic-range and high-resolution projector with dual modulation

2009 ◽  
Author(s):  
Y. Kusakabe ◽  
M. Kanazawa ◽  
Y. Nojiri ◽  
M. Furuya ◽  
M. Yoshimura
Keyword(s):  
High Resolution ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
High Dynamic

High Resolution Noise Radar without Fast ADC

2012 ◽  
Vol 58 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Konstantin Lukin ◽  
Pavlo Vyplavin ◽  
Oleg Zemlyaniy ◽  
Volodymyr Palamarchuk ◽  
Sergii Lukin
Keyword(s):  
Signal Processing ◽  
High Resolution ◽  
Dynamic Range ◽  
Sampling Rate ◽  
High Dynamic Range ◽  
Frequency Noise ◽  
Processing Scheme ◽  
Range Resolution ◽  
Noise Radar ◽  
High Dynamic

High Resolution Noise Radar without Fast ADCConventional digital signal processing scheme in noise radars has certain limitations related to combination of high resolution and high dynamic range. The bandwidth of radar signal defines range resolution of any radar: the wider the spectrum the better the resolution. In noise radar with conventional processing the sounding and reference signals are to be digitized at intermediate frequency band and to be processed digitally. The power spectrum bandwidth of noise signal which can be digitized with ADC depends on its sampling rate. In currently available ADCs the faster is sampling rate the smaller is its depth (number of bits). Depth of the ADC determines relation between the smallest and highest observable signals and thus limits its dynamic range. Actually this is the main bottleneck of high resolution Noise Radars: conventional processing does not enable getting high range resolution and high dynamic range at the same time. In the paper we discuss ways to go around this drawback by changing signal processing ideology in noise radar. We present results of our consideration and design of two types of high resolution Noise Radar which uses slow ADCs: noise radar with digital generation of sounding signal and analog evaluation of cross-correlation and stepped frequency noise radar. We describe main ideas of these radar schemes and results of experimental tests of the approaches.

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