
53-6 Optical
cleaving and fusion splicing is relatively eective. ey also have high mechanical strength against pull-
ing
an
d
be
nding
. No
twithstanding
th
at,
ot
her
ma
terials
su
ch
as u
orozirconate,
u
oroaluminate,
an
d
ch
alcogenide
gl
asses
an
d
cr
ystalline
ma
terials
li
ke
sa
pphire
ar
e
so
metimes
us
ed
fo
r
lo
nger-wavelength
in
frared
or ot
her
sp
ecialized
ap
plications
. Wh
ile
ba
ndwidth
is th
e
pr
imary
co
nsideration
in th
e
us
e
of
b
er
opt
ics
in co
mmunication
ap
plications,
li
ght
at
tenuation
ch
aracteristics
ar
e
eq
ually
im
portant
. e
ov
erall
qu
ality
of a b
er-optic
li
ght
gu
ide
is de
termined
by it
s
li
ght
tr
ansmissivity,
de
ned
as th
e
ra
tio
of
th
e
o
utput
l
ig ...