Universiti Teknologi Malaysia Institutional Repository

Cosine bend-linear waveguide digital optical switch with parabolic heater

Yulianti, Ian and Mohd. Supa’at, Abu Sahmah and Idrus, Sevia M. and Al-hetar, Abdulaziz M. (2010) Cosine bend-linear waveguide digital optical switch with parabolic heater. Optics & Laser Technology, 42 (1). pp. 180-185. ISSN 00303992

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Official URL: http://dx.doi.org/10.1016/j.optlastec.2009.06.003


A new digital optical switch (DOS) with large branching angle and short device length that exhibits low crosstalk and low power consumption is demonstrated. The Y-branch shape was optimized by introducing constant effective refractive index difference between branches (?Neff) along the propagation direction through beam propagation method (BPM) scheme. To provide decreasing local branching angle that results in the improvement of the crosstalk, two modified cosine bend was introduced to form the Y-branch. The modified cosine branch was then connected to a linear branch. The heater electrode was optimized so that the temperature fields induce a constant ?Neff to satisfy initial assumption in designing the Y-branch shape. With branching angle of 0.299° and device length of only 5 mm, the simulation shows that the device could exhibits crosstalk of -33 dB at calculated required power of only 26 mW.

Item Type:Article
Uncontrolled Keywords:digital optical switch, thermo-optic switch, cosine s-bend
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:23016
Deposited By: Narimah Nawil
Deposited On:08 Mar 2012 16:57
Last Modified:22 Mar 2018 18:31

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