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Polymer waveguide thermo-optic switches with −70 dB optical crosstalk

✍ Scribed by Young-Ouk Noh; Hyung-Jong Lee; Yong-Hyub Won; Min-Cheol Oh

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
140 KB
Volume
258
Category
Article
ISSN
0030-4018

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✦ Synopsis

To reduce the crosstalk of the polymer waveguide optical switches, waveguide attenuators are integrated with the switch on the same substrate. The switch and attenuator shares a single connected electrode which is controlled by a single current source. Due to the simple structure of the integrated attenuator, the device length is reduced to 10 mm so as to provide low insertion loss of 0.8 and 1.1 dB for 1300 and 1550 nm, respectively. Further radiation of the remained optical signal on the switch-off branch is induced by the integrated attenuator so that the switching crosstalk is reduced to À70 dB with an applied electrical power of 200 mW. The low crosstalk is maintained for the environmental temperature range of À10 to 55 °C.

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