decollimation

Decollimation: In a beam with the minimum possible ray divergence or convergence, any mechanism by which rays are caused to diverge or converge from parallelism. Decollimation may be deliberate for systems reasons, or may be caused by many factors, such as refractive index inhomogeneities, occlusions, scattering, deflection, diffraction, reflection, and refraction. Decollimation occurs in applications such as radio, radar, sonar, and optical communications.

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crystal oscillator
curve fitting compaction
customer office terminal
customer premises equipment
customer service unit
custom local area signaling service
cutback technique
cutoff frequency
cutoff wavelength
subroutine
data access arrangement

data bank
data compaction
data element
data forwarder
data integrity
data link
data service unit
data signaling rate
data transmission circuit
date time group
db (car)

db(a)
dbm
dbrn
data circuit terminating equipment
decrypt
degradation
degree of isochronous distortion
degree of start stop distortion
dejitterizer
delay
delay encoding

delay line
delta modulation
demand assignment
demand factor
demand load
desensitation
design objective
detector
deterministic routing
d 4
pulse dialing