Browsing by Author "Sze, JR"

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Design and fabrication of a dense wavelength division demultiplexer with grism structure
(2005-02-01)
Sze, JR
;
Lu, MH
;
光電工程學系
;
Department of Photonics
The implementation of a low-loss demultiplexer with a KRS-5 grism structure for a dense wavelength division demultiplexing (DWDDM) system in fiber communication is carried out. The system has 16 channels with wavelength spacing of 0.8 nm in the C-band wavelength region. This device is successfully fabricated by a precise plunge-cut diamond-turning technology. Numerical calculations and measurements indicate that this DWDDM is polarization independent and has higher optical efficiency and signal to noise ratio (SNR). (c) 2005 Society of Photo-Optical Instrumentation Engineers.
Design and fabrication of the diffractive phase element that synthesizes three-color pseudo-nondiffracting beams
(2002-12-01)
Sze, JR
;
Lu, MH
;
光電工程學系
;
Department of Photonics
The experimental implementation of the diffractive phase element (DPE) that synthesizes three-color psudo-nondiffracting beams (PNDBs) is described. This DPE is designed with the amplitude-phase retrieval method and fabricated by using optical contact lithography and reactive-ion etching (RIE). Measurements demonstrate that the fabricated DPE has the desired function, i.e., it forms a six-segment PNDB over a finite axial region and is monochromatic in each segment. (C) 2002 Society of Photo-Optical Instrumentation Engineers.