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Chin. Opt. Lett.
Research Highlights                                                                [+More]
Microwave resonant electro-optic bulk phase modulator for two-dimensional smoothing by spectral dispersion in SG-II

A special-velocity-matched electro-optic (EO) phase modulator employing a microwave resonant design in lithium niobate is presented. Both the microwave property and phase-modulation performances of the 3.25-GHz modulator agree well with the numerical simulations. Using this modulator in a single-pass configuration with 1-kW microwave drive power, the spectral bandwidth of a 1 053-nm, 3-ns pulse-l...
Design of compact bi-directional triplexer based on silicon nanowire waveguides

A compact bi-directional (BiDi) triplexer using grating-assisted multimode interference (MMI) coupler is proposed based on silicon nanowire waveguides. Because of the high index contrast between silicon and silicon dioxide, the size of the structure is greatly reduced with a footprint of 2.5×911 (μm). Asymmetrical ports are introduced in the MMI structure to satisfy the bandwidth requirements of t...
Echelle dif fraction grating based high-resolution spectrometer-on-chip on SiON waveguide platform

An echelle diffraction grating based high-resolution spectrometer-on-chip on silicon oxynitride (SiON) waveguide platform operated at a wavelength range of 850 nm is demonstrated. The chip comprises 120 output waveguides with 0.25-nm wavelength channel spacing and has a size of only 11 × 6 (mm). The experimental results show that the insertion loss is –14 dB, the measured adjacent channel crosstal...
Surface plasmon-enhanced amorphous-silicon-nitride light emission with single-layer gold waveguides

Surface-plasmon (SP) enhancement of amorphous-silicon-nitride (a-SiNx) light emission with single-layer gold (Au) waveguides is experimentally demonstrated through time-resolved photoluminescence measurement. The a-SiNx active layer with strong steady-state photoluminescence at 560 nm is prepared by plasma-enhanced chemical vapor deposition, and the Au waveguide on the top of the a-SiNx layer is f...
Announcements                                [+More]
COL Cover Story: Compact triplexer based on silicon nanowire waveguides [19/04/2013]

The researchers, led by Prof. Fuwan Gan, from Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, designed a compact triplexer based on silicon nanowire waveguides. Because of the high index con...
COL Cover Story: SiON based high-resolution spectrometer-on-a-chip [19/04/2013]

The researchers, led by Prof. Jianjun He, from Zhejiang University in China, chose SiON as waveguide core layer material to obtain high index contrast, and combined the high performance spectral analysis function of echelle diffrac...
COL Cover Story:Surface plasmon polariton enhances silicon light emission [19/04/2013]

Professor Yidong HUANG’s group from Tsinghua University, China, has recently reported experimental results of enhanced spontaneous emission (SE) from silicon nanoparticles embedded in silicon nitride, which verified the feasibility o...
COL Cover Story:Physics of natural laser in air and other gases [19/04/2013]

In environmental science, it is desirable to generate coherent light sources with different frequencies at a designated position in air, especially for measuring atmospheric trace species and monitoring global warming and stratospher...
Acknowledgement to reviewers for COL (2003-2012) [21/01/2013]

On the 10th anniversary of COL, we would like to show our sincere appreciation to scientists who do volunteer peer review for COL in 2003-2012 as follows: A. Alfalou A. Asgari A. Bahari A. Belokopytov A. Cusano A. G. ...
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