Search Results - "Lee, Yeung Lak"
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Highly sensitive strain and bending sensor based on in-line fiber Mach–Zehnder interferometer in solid core large mode area photonic crystal fiber
Published in Optics communications (15-05-2010)“…We have proposed highly sensitive strain and bending sensor with very low temperature sensitivity based on in-line Mach–Zehnder interferometer (MZI) in solid…”
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Design and Study of Strip-Slot Waveguide Structure for Dispersion Analysis
Published in IEEE photonics journal (01-02-2016)“…We propose a slot waveguide design for dispersion compensation at the wavelength of 1500 nm. The proposed structure is based on coupled strip slot waveguide. A…”
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Reverse Ridge Silicon Strip Waveguide and Silica Slot Waveguide Structure for the Dispersion at 1550 nm
Published in IEEE photonics journal (01-12-2016)“…We have proposed a reverse ridge strip waveguide and a slot waveguide structure for the dispersion compensation at 1550 nm wavelength. The resonance between…”
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GeAsSe chalcogenide slot optical waveguide ring resonator for refractive index sensing
Published in 2017 25th Optical Fiber Sensors Conference (OFS) (01-04-2017)“…We present a slot optical waveguide ring resonator that can be used as a refractive index sensor. The proposed ring resonator works on the principle of…”
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Conference Proceeding -
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Spectral characterization of helicoidal long-period fiber gratings in photonic crystal fibers
Published in Optics communications (01-09-2009)“…We report a new helicoidal long-period grating by twisting a photonic crystal fiber under CO 2 laser irradiation and experimentally investigated its novel…”
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All-optical wavelength conversion and tuning by the cascaded sum- and difference frequency generation (cSFG/DFG) in a temperature gradient controlled Ti:PPLN channel waveguide
Published in Optics express (2005)“…All-optical single and multiple wavelength conversion and tuning by the cascaded sum- and difference frequency generation (cSFG/DFG) have been demonstrated in…”
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Continuous control of spatial mode rotation using second harmonic generation
Published in Applied physics letters (08-11-2010)“…This paper reports a continuously rotating spatial mode contributed from the interference between two second harmonic (SH) high-order modes, TM 10 and TM 01 ,…”
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Wavelength tunable optical time-domain reflectometry based on wavelength swept fiber laser employing two-dimensional digital micro-mirror array
Published in Optics communications (15-03-2009)“…We demonstrate a cost effective wavelength tunable optical time-domain reflectometry (OTDR) for wavelength division multiplexing passive optical networks…”
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Wavelength selective single and dual-channel dropping in a periodically poled Ti:LiNbO3 waveguide
Published in Optics express (2004)Get full text
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Chalcogenide waveguide structure for dispersion in mid-infrared wavelength
Published in Japanese Journal of Applied Physics (01-03-2017)“…We present a waveguide design with low dispersion in mid-infrared wavelengths. The design consists of slot-strip-slot structures horizontally, the strip…”
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Tunable Narrow-band Terahertz Generation at Quasi-phase matched crystals using femtosecond laser pulse
Published in 2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference (01-05-2009)“…Terahertz pulse were generated in periodically poled lithium niobate and lithium tantalate around 1.4 and 0.6 THz with band-width off 20 GHz. The generated…”
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Conference Proceeding -
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Efficient single-pass optical parametric generator for environmental gas sensing based on periodically poled stoichiometric lithium tantalate
Published in 2007 Conference on Lasers and Electro-Optics (CLEO) (01-05-2007)“…An efficient 1064 nm-pumped OPG that could be operated at room temperature using a PPMgSLT crystal is presented. 1.6 W total output for a 4.8 W input, power…”
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Conference Proceeding -
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High peak power short pulse Eye-safe fiber lasers
Published in 2012 17th Opto-Electronics and Communications Conference (01-07-2012)“…We present currently developed high power pulsed Eye-safe fiber lasers based on Thulium doped fiber and Erbium-doped fiber. The characteristics of each laser…”
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Conference Proceeding
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Effects of uncertain phase-matching wave vectors of rotating fan-out type poled LiNbO3 on THz generation
Published in Optics express (27-09-2010)“…We investigated terahertz pulses from a rotating fan-out type poled lithium niobate (LiNbO(3)) pumped by femtosecond laser pulses. In particular, the rotating…”
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Multiwavelength Sŏlc filters based on χ ( 2 ) nonlinear quasiperiodic photonic crystals with Fibonacci sequences
Published in Applied physics letters (17-12-2007)“…We demonstrate that a χ ( 2 ) nonlinear quasiperiodic photonic crystal can act as a multiwavelength Sŏlc filter. The χ ( 2 ) nonlinear quasiperiodic photonic…”
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Electro- and thermo-optic effects on multi-wavelength Solc filters based on χ ^(2) nonlinear quasi-periodic photonic crystals: Erratum
Published in Optics express (22-06-2009)Get full text
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Effects of uncertain phase-matching wave vectors of rotating fan-out type poled LiNbO_3 on THz generation
Published in Optics express (27-09-2010)Get full text
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