Prof. Edwin Y. Pun Profile

Prof. Edwin Y. Pun

Professor at City Univ of Hong Kong

SPIE Involvement:

Conference Program Committee | Author

Publications (31)

Proceedings Article | 27 November 2023 Paper

Photonic-assisted multi-format microwave signal generation based on thin-film lithium niobite

Sha Zhu, Miaoxing Cui, Jiaxue Feng, Kunpeng Zhai, Nan Zhou, Yiwen Zhang, Edwin Yue Bun Pun, Ning Hua Zhu, Cheng Wang

Proceedings Volume 12761, 127610F (2023) https://doi.org/10.1117/12.2686410

KEYWORDS: Signal generators, Microwave radiation, Microwave photonics, Phase shift keying, Photonic microstructures, Modulation, Amplitude shift keying, Thin films, Lithium niobate

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Proceedings Article | 3 May 2013 Paper

Optical biosensor based on cadmium sulfide-silver nanoplate hybrid structure

S.X. Lin, M.M. Wong, P. Pat, C.Y. Wong, S. Chiu, E.Y. Pun

Proceedings Volume 8774, 877413 (2013) https://doi.org/10.1117/12.2017182

KEYWORDS: Silver, Cadmium, Nanoparticles, Neptunium, Refractive index, Luminescence, Surface plasmons, Ion exchange, Spectroscopy, Chromophores

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SPIE Journal Paper | 1 October 2011

Controllable fabrication of enclosed micro/nanochannels via polymethyl methacrylate pattern as sacrificial template and capillary effect

Yunqiao Wu, Jun Zhou, Edwin Pun

JM3, Vol. 10, Issue 04, 049701, (October 2011) https://doi.org/10.1117/12.10.1117/1.3665215

KEYWORDS: Liquids, Bioalcohols, Polymethylmethacrylate, Nanolithography, Capillaries, Silica, Fabrication, Scanning electron microscopy, Silicon, Image processing

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SPIE Journal Paper | 1 April 2011

Bent channel design in buried Er³⁺/Yb³⁺ codoped phosphate glass waveguide fabricated by field-assisted annealing

Ruitu Zhao, Mu Wang, Baojie Chen, Ke Liu, Edwin Pun, Hai Lin

OE, Vol. 50, Issue 04, 044602, (April 2011) https://doi.org/10.1117/12.10.1117/1.3562983

KEYWORDS: Waveguides, Glasses, Signal attenuation, Erbium, Ytterbium, Channel waveguides, Annealing, Refractive index, Beam propagation method, Integrated optics

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Proceedings Article | 5 November 2010 Paper

Influence on the luminescence europium complex by localized surface plasmon of silver and gold nanoparticles

Feng Song, Qingru Wang, Hongyan Zhao, Jiadong Liu, Chengguo Ming, Chao Zhang, Jianguo Tian, Jingjun Xu, Shangxin Lin, Edwin Pun

Proceedings Volume 7848, 784803 (2010) https://doi.org/10.1117/12.870408

KEYWORDS: Nanoparticles, Luminescence, Silver, Europium, Ions, Gold, Optical spheres, Surface plasmons, Absorption, Metals

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SPIE Journal Paper | 1 June 2010

Optical performance of Er3+/Yb3+ codoped core-cladding heterogeneous single-mode fiber amplifier

D. Wang, W. Lei, Edwin Pun, F. Song, H. Gong, H. Lin

OE, Vol. 49, Issue 06, 065008, (June 2010) https://doi.org/10.1117/12.10.1117/1.3456620

KEYWORDS: Glasses, Erbium, Ytterbium, Fiber amplifiers, Absorption, Cladding, Single mode fibers, Optical amplifiers, Signal attenuation, Refractive index

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SPIE Journal Paper | 1 April 2010

SU-8 rib waveguide Bragg grating filter using composite stamp and solvent-assisted microcontact molding technique

Cheng-Sheng Huang, Yue-Bun Pun, Wei-Chih Wang

JM3, Vol. 9, Issue 02, 023013, (April 2010) https://doi.org/10.1117/12.10.1117/1.3453671

KEYWORDS: Waveguides, Fiber Bragg gratings, Composites, Optical filters, Polymers, Fabrication, Lithography, Optical lithography, Photoresist materials, Scanning electron microscopy

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Proceedings Article | 16 February 2010 Paper

The influence of photonic mode density on the luminescence of erbium-doped optical materials

Feng Song, Qingru Wang, Chengguo Ming, Jianguo Tian, Jingjun Xu, Shangxin Lin, Edwin Y. B. Pun

Proceedings Volume 7598, 759803 (2010) https://doi.org/10.1117/12.846433

KEYWORDS: Glasses, Luminescence, Erbium, Silver, Ceramics, Metals, Ions, Nanoparticles, Absorption, Crystals

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Erbium doped optical materials have been widely researched and many applications have been demonstrated. According to the Fermi golden rule, the spontaneous emission rate from excited level |i> to lower level |j> is Γ_ij ∞ |M_ij|² ρ(νij), where M_ij is the matrix element related to the two energy levels, ρ_ij is the optical density and is also known as the photon mode density (PMD). The concept of PMD was put forward by Purcell in 1946, and is a quantity determined by the environment aound the rare earth ions. The radiative performance of a rare earth(RE) doped material is decided not only by the wave function of the energy level that the rare earth ions are located, but also by the environment of the RE ions, i.e., the PMD. In various materials, the state of the host (crystal, glass or glass ceramics), the composition of the host with same state (for examples, the different glasses), the doping of metal into the host, and the surface plasmon portions (SPP) arised from the metal gratings or nanoparticals on the host, will all change the optical density of the materials, Thus the PMD are different. In this paper, we summarized the influence of the PMD on the luminescence of erbium doped materials for above indicated cases. Especially, we reported the difference of the luminescence performance of the erbium doped phosphate glass ceramics and its precursor glass, from which, we can find that even the composition of both glass ceramics and glass are the same, the luminescence performance are quite different due to the different PMD. Another example we illustrate in this paper is to use SPP to change the PMD. When RE doped glass is coated with a thin metal film or islands, SPP mode will be generated under special condition. We summarized the recent progress on the field, and also demonstrated the enhancement of fluorescence in the visible wavelengths and 1.5μm wavelength, from which, we can think that the SPP changes the PMD of the material and the emission rate is modified.

Proceedings Article | 1 October 2005 Paper

Integrated optical polymer amplifiers

Edwin Pun

Proceedings Volume 5956, 595605 (2005) https://doi.org/10.1117/12.623539

KEYWORDS: Polymers, Waveguides, Polymer multimode waveguides, Erbium, Optical amplifiers, Ions, Ultraviolet radiation, Electro optic polymers, Channel waveguides, Electron beams

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Proceedings Article | 31 January 2005 Paper

Small-signal and large-signal performance test of high-speed optoelectronics devices

N. Zhu, C. Chen, J. Sun, E. Pun, P.S. Chung

Proceedings Volume 5624, (2005) https://doi.org/10.1117/12.579690

KEYWORDS: Semiconductor lasers, Calibration, Packaging, Optoelectronic devices, Modulation, Photodiodes, Network security, Modulators, Optoelectronics, Microwave radiation

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Proceedings Article | 25 October 2004 Paper

Buried channel waveguides using ion-exchange and field-assisted annealing in glass: modeling and experiments

Ke Liu, Edwin Pun

Proceedings Volume 5595, (2004) https://doi.org/10.1117/12.579942

KEYWORDS: Waveguides, Glasses, Refractive index, Channel waveguides, Ions, Planar waveguides, Diffusion, Annealing, Data modeling, Integrated optics

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Proceedings Article | 28 August 2002 Paper

Very low-loss fiber-to-waveguide coupling using diffraction optical element mode converter

Si Lu, Yingbai Yan, Edwin Pun, Guofan Jin

Proceedings Volume 4904, (2002) https://doi.org/10.1117/12.481241

KEYWORDS: Diffractive optical elements, Waveguides, Photonic integrated circuits, Single mode fibers, Optical components, Diffraction, Fourier transforms, Fiber couplers, Thin films, Phase retrieval

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Proceedings Article | 11 July 2002 Paper

Design of flat-field arrayed waveguide grating based on aberration theory

Si Lu, Yingbai Yan, Zhehai Zhou, Guofan Jin, Edwin Pun

Proceedings Volume 4870, (2002) https://doi.org/10.1117/12.475572

KEYWORDS: Waveguides, Aberration theory, Phased arrays, Optical design, Spectroscopy, Stars, Wavelength division multiplexing, Wave propagation, Lutetium, Silicon

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Proceedings Article | 5 April 2002 Paper

Multilayer optical storage disk based on the frequency up-conversion effect from rare-Earth ions

Ho-Pui Ho, Wing-Wai Wong, Shu-Yuen Wu, Edwin Pun

Proceedings Volume 4645, (2002) https://doi.org/10.1117/12.461651

KEYWORDS: Glasses, Luminescence, Ytterbium, Optical storage, Ions, Holmium, Sol-gels, Thin films, Infrared radiation, Optical discs

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Proceedings Article | 6 November 2001 Paper

Electron-beam direct-write polymeric optical waveguides

Wing Wong, Edwin Pun

Proceedings Volume 4453, (2001) https://doi.org/10.1117/12.447639

KEYWORDS: Polymers, Waveguides, Polymer multimode waveguides, Electro optic polymers, Channel waveguides, Electron beams, Cladding, Wave propagation, Polymethylmethacrylate, Silicon

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Proceedings Article | 30 October 2001 Paper

Polymeric waveguides for integrated optics applications

Edwin Pun, Wing Wong

Proceedings Volume 4598, (2001) https://doi.org/10.1117/12.447097

KEYWORDS: Polymers, Waveguides, Polymer multimode waveguides, Electron beams, Integrated optics, Ultraviolet radiation, Reactive ion etching, Fabrication, Local area networks, Silica

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Proceedings Article | 19 October 2001 Paper

Design and simulation of very low insertion loss arrayed waveguide grating using full-vectorial beam propagation method with circular cylindrical coordinates

Zhehai Zhou, Daoyi Wang, Si Lu, Yingbai Yan, Guofan Jin, Edwin Pun

Proceedings Volume 4579, (2001) https://doi.org/10.1117/12.444873

KEYWORDS: Waveguides, Beam propagation method, Optical simulations, Optical design, Wave propagation, Refractive index, Structural design, Algorithm development, 3D modeling, Dense wavelength division multiplexing

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Proceedings Article | 17 October 2001 Paper

Optimum design of arrayed waveguide grating based on a novel Newton recursive algorithm

Zhehai Zhou, Si Lu, Yingbai Yan, Guofan Jin, Edwin Pun

Proceedings Volume 4581, (2001) https://doi.org/10.1117/12.445068

KEYWORDS: Waveguides, Optical design, Diffraction gratings, Diffraction, Algorithms, Computer simulations, Numerical analysis, Demultiplexers, Dispersion, Lithium

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Proceedings Article | 24 August 2001 Paper

SU8C resist for electron beam lithography

Wing Wong, Edwin Pun

Proceedings Volume 4345, (2001) https://doi.org/10.1117/12.436810

KEYWORDS: Electron beam lithography, Refractive index, Silicon, Clocks, Optical components, Polymethylmethacrylate, Electron beams, Diffraction, Absorption, Scanning electron microscopy

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Proceedings Article | 28 April 1999 Paper

Nickel-indiffused x,y-cut LiNbO3 optical waveguides

C. Cheung, Edwin Pun, E. Herbert Li

Proceedings Volume 3666, (1999) https://doi.org/10.1117/12.347915

KEYWORDS: Diffusion, Waveguides, Nickel, Refractive index, Prisms, Temperature metrology, Polarization, Wave propagation, Dispersion, Metals

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Proceedings Article | 4 December 1998 Paper

Rare earth doped tellurite glasses

S. Man, H. Liu, Edwin Pun, Po Sheun Chung

Proceedings Volume 3491, (1998) https://doi.org/10.1117/12.328616

KEYWORDS: Glasses, Absorption, Luminescence, Phonons, Raman spectroscopy, Telecommunications, Optical amplifiers, Waveguide lasers, Optical fibers, ZBLAN

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Proceedings Article | 19 June 1998 Paper

Novel multiwavelength Er3+-doped fiber laser with double-pass Mach-Zehnder comb filter

Honglin An, Hongdu Liu, Xiang Zhi Lin, Edwin Pun, Po Sheun Chung

Proceedings Volume 3420, (1998) https://doi.org/10.1117/12.312859

KEYWORDS: Fiber lasers, Interferometers, Linear filtering, Wavelength division multiplexing, Laser resonators, Liquids, Nitrogen, Optical fibers, Erbium, Semiconductor lasers

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Proceedings Article | 3 October 1996 Paper

Physical and optical properties of sputtered lithium niobate thin films

Dexin Lu, Emile Wong, Edwin Pun, Po Sheun Chung

Proceedings Volume 2897, (1996) https://doi.org/10.1117/12.252926

KEYWORDS: Thin films, Transmittance, Crystals, Thin film deposition, Sputter deposition, Ceramics, Single crystal X-ray diffraction, Lithium niobate, Oxygen, Temperature metrology

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Proceedings Article | 17 March 1995 Paper

Ion-exchanged optical waveguides and devices in KTiOPO4

Lu Ping Shi, Edwin Pun, Po Sheun Chung

Proceedings Volume 2401, (1995) https://doi.org/10.1117/12.205032

KEYWORDS: Waveguides, Crystals, Ferroelectric materials, Ions, Modulators, Annealing, Electro optics, Ion exchange, Rubidium, Diffusion

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Proceedings Article | 17 March 1995 Paper

Proton-exchanged optical waveguides in Y-cut MgO:LiNbO3

W. Hou, S. Zhao, Edwin Pun, Po Sheun Chung

Proceedings Volume 2401, (1995) https://doi.org/10.1117/12.205037

KEYWORDS: Waveguides, Diffusion, Crystals, Refractive index, Lithium, Acoustics, Etching, Ions, Optoelectronics, Lithium niobate

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Proceedings Article | 25 August 1994 Paper

Proton-exchanged LiTaO3 optical waveguides using cinnamic acid

Edwin Pun, Calvin C.K. Chan, Po Sheun Chung

Proceedings Volume 2212, (1994) https://doi.org/10.1117/12.185143

KEYWORDS: Waveguides, Diffusion, Annealing, Crystals, Wave propagation, Oxygen, Tantalum, Electronics engineering, Electro optical modeling, Chemical reactions

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Proceedings Article | 28 January 1993 Paper

Proton exchange technology for integrated optics application

Edwin Y. Pun

Proceedings Volume 10267, 102670A (1993) https://doi.org/10.1117/12.141399

KEYWORDS: Integrated optics, Waveguides, Fabrication, Ferroelectric materials, Titanium

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Proceedings Article | 1 December 1991 Paper

Experimental studies of proton-exchanged waveguides in lithium niobate using toluic acid

Edwin Pun, Kwok Kwong Loi, Po Sheun Chung

Proceedings Volume 1583, (1991) https://doi.org/10.1117/12.50876

KEYWORDS: Waveguides, Diffusion, Lithium niobate, Integrated optics, Wave propagation, Electronics engineering, Refractive index, Photonic integrated circuits, Integrated circuit design, Integrated circuits

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Proceedings Article | 1 December 1991 Paper

Annealing properties of proton-exchanged waveguides in LiNbO3 fabricated using stearic acid

Edwin Pun, Kwok Kwong Loi, Shukui Zhao, Po Sheun Chung

Proceedings Volume 1583, (1991) https://doi.org/10.1117/12.50911

KEYWORDS: Waveguides, Annealing, Tantalum, Wave propagation, Titanium, Photonic integrated circuits, Diffusion, Control systems, Refractive index, Electronics engineering

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Proceedings Article | 1 December 1991 Paper

Mode conversion in Y-branch waveguides

Andy Chan, Po Sheun Chung, Edwin Pun

Proceedings Volume 1583, (1991) https://doi.org/10.1117/12.50882

KEYWORDS: Waveguides, Beam propagation method, Refractive index, Cladding, Integrated optics, Light wave propagation, Electronics engineering, Photonic integrated circuits, Channel projecting optics, Signal attenuation

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Proceedings Article | 1 February 1991 Paper

Recent development of proton-exchanged waveguides and devices in lithium niobate using phosphoric acid

Edwin Pun

Proceedings Volume 1374, (1991) https://doi.org/10.1117/12.24949

KEYWORDS: Waveguides, Annealing, Integrated optics, Optoelectronics, Diffusion, Refractive index, Lithium niobate, Wave propagation, Channel waveguides, Fabrication

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