Phase modulation to amplitude modulation conversion of CW laser light in optical fibres

1986 ◽  
Vol 22 (8) ◽  
pp. 409 ◽  
Author(s):  
A.R. Charaplyvy ◽  
R.W. Tkach ◽  
L.L. Buhl ◽  
R.C. Alferness
Keyword(s):  
Amplitude Modulation ◽  
Phase Modulation ◽  
Laser Light ◽  
Optical Fibres ◽  
Cw Laser

Amplitude modulation of the cw laser light in the TEM mn mode by means of a mechanical chopper

1986 ◽  
Vol 39 (3) ◽  
pp. 195-200
Author(s):  
I. Mendaš ◽  
P. Vujković Cvijin ◽  
D. Ignjatijević ◽  
G. Milošević
Keyword(s):  
Amplitude Modulation ◽  
Laser Light ◽  
Cw Laser ◽  
Mechanical Chopper

Conversion of amplitude modulation to phase modulation

1977 ◽  
Vol 43 (3) ◽  
pp. 273-285 ◽  
Author(s):  
B. N. BISWAS ◽  
S. K. RAY ◽  
P. BANERJEE
Keyword(s):  
Amplitude Modulation ◽  
Phase Modulation

scholarly journals Transmission code optimization method for incoherent scatter radar

2008 ◽  
Vol 26 (9) ◽  
pp. 2923-2927 ◽  
Author(s):  
J. Vierinen ◽  
M. S. Lehtinen ◽  
M. Orispää ◽  
I. I. Virtanen
Keyword(s):  
Amplitude Modulation ◽  
Phase Modulation ◽  
Optimization Method ◽  
Search Method ◽  
Code Optimization ◽  
Incoherent Scatter Radar ◽  
Binary Phase ◽  
Incoherent Scatter ◽  
Scatter Radar ◽  
Optimization Search

Abstract. When statistical inversion of a lag profile is used to determine an incoherent scatter target, the posterior variance of the estimated target can be used to determine how well a set of transmission codes perform. In this work we present an incoherent scatter radar transmission code optimization search method suitable for different modulation types, including binary phase, polyphase and amplitude modulation. We found that the combination of amplitude and phase modulation provides better performance than traditional binary phase coding, in some cases giving better accuracy than alternating codes.

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