Polymeric variable optical attenuator based on surface plasmon polariton
- Authors
- Park, Suntak; Eom, Yong-Sung; Won, Hyong Sik; Song, Seok Ho
- Issue Date
- Apr-2006
- Publisher
- SPIE
- Citation
- Proceedings of SPIE - The International Society for Optical Engineering, v.6183, pp.1 - 7
- Indexed
- SCOPUS
- Journal Title
- Proceedings of SPIE - The International Society for Optical Engineering
- Volume
- 6183
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/181569
- DOI
- 10.1117/12.661655
- ISSN
- 0277-786X
- Abstract
- We propose a polymeric variable optical attenuator based on long range surface plasmon polaritons (LRSPPs) along a thin metal stripe embedded in polymers. The device is operated by controlling radiation loss of the LRSPP mode resulting from the temperature gradient of the polymer cladding caused by a heater. For guiding LRSPPs and efficient coupling of single mode fibers, gold stripes with 20-nm thickness, 4-μm width and 1-cm length are utilized. To obtain long physical lifetime, the heater is formed on the top of the polymer cladding with a 200-nm Au film which is about ten times thicker than the thin metal waveguide. The fabricated device is characterized at a wavelength of 1.55 μm, exhibiting high attenuation of less than 30 dB with the operating power of 100 mW. The fiber-to-fiber total insertion loss of 6.1 dB is achieved when using single mode fibers.
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