Reversed and Uniform Δβ Directional Coupler Optical Switch with Periodically Changing Coupling Strength
A new device structure for a reversed Δ β directional coupler is proposed to achieve the lower value of phase mismatch and device length product ( Δ β L ) required for switching or digital-like response. By decreasing the coupling coefficient in the middle of each electrode section, the Δ β L value...
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| Published in | Japanese Journal of Applied Physics Vol. 39; no. 3S; p. 1512 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
2000
|
| Online Access | Get full text |
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| Summary: | A new device structure for a reversed
Δ
β directional
coupler is
proposed to achieve the lower value of phase mismatch and device
length product (
Δ
β
L
) required for switching or
digital-like
response. By decreasing the coupling coefficient in the middle of
each electrode section, the
Δ
β
L
value required to drive
the device
is reduced to almost half of that for a conventional device. The
response curve of the device can be modified to obtain a wide range
of
Δ
β
L
values. |
|---|---|
| ISSN: | 0021-4922 1347-4065 |
| DOI: | 10.1143/JJAP.39.1512 |