Browsing by Author "Chang, JT"

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1-to-(NxN) optical fan-out module for optical interconnects
(1997-04-01)
Su, DC
;
Chang, JT
;
Huang, YT
;
電子工程學系及電子研究所
;
光電工程學系
Based on the structure of substrate-mode holograms, a new type of 1-to-(N x N) optical fan-out module which consists of two layers of grating arrays for optical interconnects is presented. The first and second layer have a I x N grating array and a N x N grating array, respectively. By suitably choosing the diffracted angle and diffraction efficiency of every grating, similar diffraction will be performed repeatedly at every grating. Finally, N x N output beams are obtained.
1-to-25 optical fanout module for optoelectronics interconnects
(1996)
Su, DC
;
Chang, JT
;
Huang, YT
;
光電工程學系
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Department of Photonics
A four channel polarization and wavelength separation element using substrate-mode stacked holograms
(1996-06-17)
Chang, JT
;
Su, DC
;
Huang, YT
;
電子工程學系及電子研究所
;
光電工程研究所
A four channel polarization and wavelength separation element using substrate-mode stacked holograms is proposed based on the diffraction efficiency characteristics for polarization and the wavelength selectivity of a transmission-type phase volume grating. We fabricated a sample device and measured its polarization selectivity, output spectrum, and insertion loss of each channel to demonstrate its performance. (C) 1996 American Institute of Physics.
A four channel polarization and wavelength separation element using substrate-mode stacked holograms
(1996-06-17)
Chang, JT
;
Su, DC
;
Huang, YT
;
電子工程學系及電子研究所
;
光電工程學系
A four channel polarization and wavelength separation element using substrate-mode stacked holograms is proposed based on the diffraction efficiency characteristics for polarization and the wavelength selectivity of a transmission-type phase volume grating. We fabricated a sample device and measured its polarization selectivity, output spectrum, and insertion loss of each channel to demonstrate its performance. (C) 1996 American Institute of Physics.
A substrate-mode holographic collimating and beam shaping element for laser diodes
(1997-02-24)
Chang, JT
;
Su, DC
;
Huang, ZX
;
Huang, YT
;
電子物理學系
A new type of substrate-mode holographic collimating and beam shaping element for laser diodes is presented. Techniques and design considerations are described. A sample is fabricated and its function is demonstrated. It has many merits, such as easy fabrication, low cost, compactness of monolithic structure, and is easily used. (C) 1997 American Institute of Physics.
A substrate-mode holographic collimating and beam shaping element for laser diodes
(1997-02-24)
Chang, JT
;
Su, DC
;
Huang, ZX
;
Huang, YT
;
電機學院
A new type of substrate-mode holographic collimating and beam shaping element for laser diodes is presented. Techniques and design considerations are described. A sample is fabricated and its function is demonstrated. It has many merits, such as easy fabrication, low cost, compactness of monolithic structure, and is easily used. (C) 1997 American Institute of Physics.
A wavelength and polarization selector made of holographic polarization beamsplitting cubes for optical communications
(1997-04-07)
Chang, JT
;
Su, DC
;
Huang, YT
;
電子工程學系及電子研究所
;
光電工程學系
We present a combined wavelength-polarization selector made of holographic polarization beamsplitting cubes in series. Each unit cube comprises a pair of prisms and a transmission-type phase volume hologram. The assembled selector, when examined with an intensity modulated beam of known polarization state, demonstrated our designated target. (C) 1997 American Institute of Physics.
Holographic polarization-selective and wavelength-selective elements in optical network applications
(1998)
Huang, YT
;
Su, DC
;
Deng, JS
;
Chang, JT
;
電子工程學系及電子研究所
Volume-type holographic optical elements perform polarization-dependent characteristics, and highly polarization-selective holographic elements can be achieved with suitable designs. In addition, wavelength-selective characteristics can also be designed with volume-type holographic optical elements. These polarization-selective and wavelength-selective components have been designed and fabricated in various structures. In this presentation, we first review the basic structures of our holographic polarization-selective and wavelength-selective elements. Normally incident and output coupling of our compact and light-weight components provide better flexibility and easier alignment for system applications. Based on these holographic optical elements, we will introduce the compact structures for various optical interconnect applications.
Hybrid optical elements for dual-focus pickup
(1997)
Su, DC
;
Chang, JT
;
Huang, YT
;
交大名義發表
;
光電工程學系
Two hybrid optical elements are presented for dual-focus pickup in the digital versatile disk (DVD) system. One is a hybrid dual-focus lens and the other is a holographic regional mirror. The optical head consisting of these two hybrid optical elements can read the information recorded on two layers of DVD simultaneously. Its specifications are described. The fabrication parameters of these two hybrid optical elements are derived.
Phosphorus vacancy as a deep level in AlInP layers
(2000-06-15)
Sung, WJ
;
Wu, YR
;
Lee, SC
;
Wen, TC
;
Li, TJ
Deep levels in AlInP layers, grown by metal-organic chemical vapor deposition (MOCVD) with various V/III mole ratios, have been carefully investigated by deep-level transient spectroscopy (DLTS). A deep level originating from phosphorus vacancy was observed with the activation energy of 0.65 eV. Examining this phosphorus-vacancy-related deep level provided a relatively simple means of understanding the phosphorus vacancy in AlInP, thus allowing us to determine an appropriate V/III mole ratio for growing AlInP.