| 摘要 |
#CMT# #/CMT# A compensated waveguide device comprises waveguide having first coefficient of thermal expansion (CTE) comprising long sides (6, 7), short sides (4, 5) having median axis and longitudinal ribs (2, 3) having surface common with over 1/2 width of short side and being off-axis relative to median axis to cut in body of waveguide, and rotation unit in contact with longitudinal rib to deform short side. The rotation unit comprises prongs (8, 9, 10, 11) of low thermal deformability having second CTE smaller than first CTE by a factor >= 5 and a brace and frame (12) having CTE larger than second CTE. #CMT#USE : #/CMT# A compensated waveguide device for multiplexers-demultiplexers. #CMT#ADVANTAGE : #/CMT# The device ensures phase stability within the waveguide at large temperature changes. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a compensated waveguide device. 2, 3 : Longitudinal ribs 4, 5 : Short sides 6, 7 : Long sides 8, 9, 10, 11 : Prongs 12 : Frame #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Component: The waveguide comprises aluminum (Al) or titanium (Ti). The prongs includes a first type of pair comprising Invar(RTM: nickel steel alloy) and second type of pair comprising Ti. The brace comprises Al. The frame comprises Al or Ti. |
