Results on an optical waveguide filter operating in the near IR region are reported. The device consists of a hybrid sol-gel -based grating loaded waveguide, obtained through the merging of conventional photolithography and UV-nanoimprinting. Starting from submicrometric gratings, fabricated by electron beam lithography, a softmould has been produced and the original structures were replicated onto sol-gel photosensitive films. A final photolithographic step allowed the production of grating-loaded channel waveguides. The devices were optically characterized by transmission measurements in the telecom range 1450-1590 nm. The filter extinction ratio is -11 dB and the bandwidth is 1.7 nm.
Bragg Grating Optical Filters by UV Nanoimprinting / M., Casalboni; Dominici, Lorenzo; V., Foglietti; Michelotti, Francesco; E., Orsini; C., Palazzesi; F., Stella; P., Prosposito. - In: JOURNAL OF NANOMATERIALS. - ISSN 1687-4110. - STAMPA. - 2012:(2012), pp. 1-5. [10.1155/2012/186429]
Bragg Grating Optical Filters by UV Nanoimprinting
DOMINICI, Lorenzo;MICHELOTTI, Francesco;
2012
Abstract
Results on an optical waveguide filter operating in the near IR region are reported. The device consists of a hybrid sol-gel -based grating loaded waveguide, obtained through the merging of conventional photolithography and UV-nanoimprinting. Starting from submicrometric gratings, fabricated by electron beam lithography, a softmould has been produced and the original structures were replicated onto sol-gel photosensitive films. A final photolithographic step allowed the production of grating-loaded channel waveguides. The devices were optically characterized by transmission measurements in the telecom range 1450-1590 nm. The filter extinction ratio is -11 dB and the bandwidth is 1.7 nm.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
