Composite channel waveguides

Figure 9. Composite channel waveguide cross-section.

Figure 10. Numerical simulation of the intensity distribution in composite channel waveguide structures.

Multifunctional materials will play an important role in the development of Photonics Technology. This paper describes novel multifunctional polymeric composites for applications in both active and passive photonic components. On the molecular level, we have introduced multifunctionality by design and synthesis of chromophores which by themselves exhibit more than one functionality. At the bulk level, we have introduced the concept of a multiphasic nanostructured composites where phase separation is controlled in the nanometer range to produce optically transparent bulk in which each domain produces a specific photonic function. Results are presented from the studies of up-converted two-photon lasing, two-photon confocal microscopy, optical power limiting, photorefractivity and optical channel waveguides to illustrate the application of the multifunctional optical composites. 

An example of polymer-based channel waveguide phase modulator has recently been reported [144]. This utilized a composite polymer... 

The most common film is Si02-Ti02 composite [209,210]. Karasinski et al. have used these films to obtain strip waveguides and rib channel waveguides [211,212]. 

Que et al. have reported the fabrication of optical channel wavegides and gratings made from composites of titania and organically modified silane (Que et al., 2002). The composite is prepared using 3-glycidoxypropyltrimethoxysilane and titanium tetrapropoxide stabilized with acetylacetone as precursors. Dense and porosity-free waveguide film is obtained... 

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