Integrated waveguide gratings for wavelength-demultiplexing of free space waves from guided waves.
Optical waveguide demultiplexer was designed and fabricated by integration of two types of gratings, namely, guided-mode-selective focusing grating couplers (GMS-FGCs) and different-guided-mode-coupling distributed Bragg reflectors (DGM-DBRs) in a slab waveguide for constructing a wavelength-division-multiplexing chip-to-chip optical interconnecting board. In the waveguide demultiplexer, guided signal waves were separated wavelength-selectively by DGM-DBRs, and coupled out by GMS-FGCs to focused free space waves. Two-channel demultiplexing with 5-nm-wavelength spacing was demonstrated at around 850-nm wavelength.
Kintaka
Kenji
K
Nishii
Junji
J
Ohmori
Junpei
J
Imaoka
Yoshitaka
Y
Nishihara
Masaaki
M
Ura
Shogo
S
Satoh
Ryohei
R
Nishihara
Hiroshi
H