By Topic

Low-power consumption polymeric attenuator using a micromachined membrane-type waveguide

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Sang-Shin Lee ; LG Corp. Inst. of Technol., Seoul, South Korea ; Bu, Jong-Uk ; Seung-Yeob Lee ; Ki-Chang Song
more authors

We have proposed and demonstrated a low-power consumption thermooptic variable optical attenuator incorporating a membrane-type asymmetric branch waveguide in polymers. The membrane structure has been introduced by partially removing the silicon substrate with a bulk micromachining technique of backside etching. As a result, the heat flow in the polymer layers has been appropriately adjusted to increase the temperature gradient between the two arms of the branch and thus to enhance the attenuation efficiency. The measured electrical power consumption of the proposed attenuator was as small as 25 mW at 1550 nm, which was reduced by about 50% compared to that of the conventional device. Further improvement is achieved by a more optimized design of the area to be etched away.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 4 )