V.R., Balaji, Murugan M., Robinson S., and Nakkeeran R. “Integrated 25 GHz and 50 GHz Spectral Line Width Dense Wavelength Division Demultiplexer on Single Photonic Crystal Chip”. Opto-Electronics Review 26, no. 4 (November 6, 2018): 285–295. Accessed August 31, 2026. https://wydawnictwo.pan.pl/index.php/opelre/article/view/701.