Photonics Laboratory, Department of Electrical Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
Opt Lett. 2011 Nov 1;36(21):4125-7. doi: 10.1364/OL.36.004125.
In this Letter, we have introduced a technique, new to our knowledge, to fabricate gratings on a waveguide of azo-functionalized polymeric films using a slit mask and a fast, direct-writing method. To prevent the destruction of the waveguide by the grating formation on the waveguide, we placed a slit mask on the waveguide. By properly adjusting the resonance, this grating can be used as an integrated wavelength filter. We have produced an attenuation of 13.4 dB at 1562 nm with a FWHM of 3.45 nm. The grating has been fabricated as narrow as the width of the waveguide to couple filtered light into the waveguide by using a slit mask. Any light shifted from the resonance will pass through the waveguide undisturbed.
在这封信件中，我们引入了一种新技术，使用狭缝掩模和快速直写方法在偶氮功能化聚合物薄膜的波导上制造光栅。为了防止波导因光栅的形成而被破坏，我们将狭缝掩模放置在波导上。通过适当调整共振，这种光栅可以用作集成波长滤波器。我们在 1562nm 处产生了 13.4dB 的衰减，半峰全宽为 3.45nm。通过使用狭缝掩模，光栅被制造得与波导一样窄，以便将滤波后的光耦合到波导中。任何偏离共振的光都将不受干扰地通过波导传输。
