Measurements show that single‐mode waveguides can be constructed which have radiation losses of about 7 dB/km—very close to the intrinsic material scattering loss. These waveguides, with total losses between 60 and 70 dB/km, have permitted the measurement of bending losses which become dominant at radii of curvature of a few centimeters. An approximate theory based on bending a rectangular guide appears to represent the circular waveguide results very well.
REFERENCES
1.
2.
3.
D.
Marcuse
and R. M.
Derosier
, Bell System Tech. J.
48
, 3217
(1969
).4.
E. A. J.
Marcatili
and S. E.
Miller
, Bell System Tech. J.
48
, 2161
(1969
).
This content is only available via PDF.
© 1970 The American Institute of Physics.
1970
The American Institute of Physics
You do not currently have access to this content.
