Thermo-Optic Devices Using Polymer Waveguides

Seiji TOYODA  Naoki OOBA  Tsutomu KITOH  Takashi KURIHARA  Tohru MARUNO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.6   pp.1264-1269
Publication Date: 2002/06/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Progress in Organic Molecular Electronics)
Category: Optoelectronics and Photonics
Keyword: 
polymer waveguides,  thermo-optic effect,  TO switch,  AWG,  tunable filter,  

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Summary: 
We have developed a 22 digital optical switch (DOS) composed of four 12 DOS elements and a thermo-optic wavelength tunable filter using silicone resin waveguides. The 22 DOS operated with a switching power of 380 mW, a very low crosstalk of less than -60 dB, and a low insertion loss of less than 2.5 dB at 1.55 µm. We have also developed two types of polymer thermo-optic wavelength tunable filter with a pair of triangular phase shifters. One filter is designed for a large-scale WDM system (32 channels, 0.8 nm spacing) and the other for a small-scale WDM system (10 channels, 0.8 nm spacing). We optimized the arrayed waveguide number, reducing the operating power required by these filters. Moreover, they both operated with a low crosstalk of < -25 dB.