[16p-C301-1~12] 4.4 Opto-electronics

▲ [16p-C301-12] Analysis of Flat Top Comb-Filter based on Photonic crystal Fiber for DWDM

〇(D)vikram palodiya¹、Sanjeev Kumar Raghuwanshi¹ (1.ISM, Dhanbad, India)

キーワード：optical fibers (structures, characteristics, materials, process, evaluation), Optical filter

We have demonstration of optical comb filter based on the Sagnac loop interferometer of Photonic Crystal Fiber (PCFs). The effect of influence of high birefringence and effect of length of the two sections of the PCFs is analyzed as well as effect of polarization controller on the transmission function. This paper involves the construction of the flat top comb filter. These devices can be applicable for the dense wavelength division multiplexing (DWDM) applications.The analytical analysis of flat top comb filter based on the Sagnac loop interferometer is studied. We found the transmission band with sinusoid with similar PCFs. If the length of one fiber is twice of the other fiber, we can achieve flat top comb spectral response. Hence, by proper setting of the polarization state of PC, length of PCFs wavelength switchable comb filter can be easily obtained.