Crosstalk-Enhanced DOS Integrated with Modified Radiation-Type Attenuators

  • Received : 2008.05.16
  • Accepted : 2008.07.02
  • Published : 2008.10.31


This letter presents a crosstalk-enhanced polymer thermo-optic digital optical switch operating at a low power consumption. Modified radiation-type attenuators are integrated in a series with a conventional $1{\times}2$ digital optical switch. A low optical crosstalk of less than -45 dB is attained at a low applied switching power of 60 mW, and an insertion loss of about 1.1 dB is exhibited.