A promising polarization-insensitive thermo-optic switch based on multimode polymeric waveguides is reported. This device has a packing density of 40 channels/cm. Simulation result shows that an extinction ratio of greater than 20 dB can be achieved with the device–electrode interaction length of 30 mm. The thermo-optic switch operating at wavelengths of 632.8 nm and 1.3 μm has been demonstrated experimentally with extinction ratios of 21 and 22 dB, respectively. Such a device has an intrinsic wide optical bandwidth due to the large dynamic range of the phase-matching condition implied by the multimode waveguides. The material employed provides us with a switching speed of 100 μs.

1.
P. G. Hunsperger, Integrated Optics: Theory and Technology (Springer, New York, 1984).
2.
T. Tamir, Guided-Wave Optoelectronics (Springer, New York, 1988).
3.
E. E.
Bergmann
,
L.
McCaughan
, and
J. E.
Watson
,
Appl. Opt.
23
,
3000
(
1984
).
4.
W. K.
Burns
and
A. F.
Milton
,
IEEE J. Quantum Electron.
QE-16
,
446
(
1980
).
5.
J. C.
Campbell
,
Appl. Opt.
18
,
2037
(
1979
).
6.
D. G.
Sun
and
R. T.
Chen
,
Appl. Phys. Lett.
72
,
3139
(
1998
).
7.
K. J. Ebeling, Integrated Optoelectronics (Springer, New York, 1993).
8.
Ray T.
Chen
,
Opt. Laser Technol.
25
,
347
(
1993
).
9.
Ray T.
Chen
,
L.
Sadovnik
,
T.
Jannson
, and
J.
Jannson
,
Appl. Phys. Lett.
58
,
1
(
1991
).
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