<s>
Digital	B-Algorithm
planar	I-Algorithm
holography	I-Algorithm
(	O
DPH	O
)	O
is	O
a	O
method	O
for	O
designing	O
and	O
fabricating	O
miniature	O
components	O
for	O
integrated	O
optics	O
.	O
</s>
<s>
The	O
essence	O
of	O
the	O
DPH	O
technology	O
is	O
embedding	O
computer	O
designed	O
digital	B-Algorithm
holograms	I-Algorithm
inside	O
a	O
planar	O
waveguide	O
.	O
</s>
<s>
Benefits	O
of	O
a	O
long	O
interaction	O
path	O
have	O
long	O
been	O
used	O
by	O
volume	B-Algorithm
or	I-Algorithm
thick	I-Algorithm
holograms	I-Algorithm
.	O
</s>
<s>
Cylindrical	O
waveguides	O
(	O
optical	B-Architecture
fibers	I-Architecture
)	O
allow	O
for	O
one-dimensional	O
light	O
propagation	O
along	O
the	O
axis	O
.	O
</s>
<s>
Nanoimprinting	B-Algorithm
could	O
be	O
another	O
viable	O
method	O
of	O
fabricating	O
DPH	O
patterns	O
.	O
</s>
