Lasers, Optical Amplifiers, and Laser Optics
Stable noise-like pulse generation in all-PM mode-locked Tm-doped fiber laser based on NOLM
Meng Wang, Minqiu Liu, Yewang Chen, Deqin Ouyang, Junqing Zhao, Jihong Pei, and Shuangchen Ruan
Chinese Optics Letters
  • Jun. 21, 2021
  • Vol.19, Issue 9 (2021)
Special Issue on Lithium Niobate Based Photonic Devices
Hybrid mono-crystalline silicon and lithium niobate thin films [Invited]
Houbin Zhu, Qingyun Li, Huangpu Han, Zhenyu Li, Xiuquan Zhang, Honghu Zhang, and Hui Hu
Chinese Optics Letters
  • Jun. 21, 2021
  • Vol.19, Issue 6 (2021)
Special Issue on Lithium Niobate Based Photonic Devices
Effect of dimension variation for second-harmonic generation in lithium niobate on insulator waveguide [Invited]
Xiao-Hui Tian, Wei Zhou, Kun-Qian Ren, Chi Zhang, Xiaoyue Liu, Guang-Tai Xue, Jia-Chen Duan, Xinlun Cai, Xiaopeng Hu, Yan-Xiao Gong, Zhenda Xie, and Shi-Ning Zhu
Chinese Optics Letters
  • Jun. 21, 2021
  • Vol.19, Issue 6 (2021)
Special Issue on Lithium Niobate Based Photonic Devices
Broadband and lossless lithium niobate valley photonic crystal waveguide [Invited]
Chinese Optics Letters
  • Jun. 16, 2021
  • Vol.19, Issue 6 (2021)
Special Issue on Lithium Niobate Based Photonic Devices
Surface lattice resonances in dielectric metasurfaces for enhanced light-matter interaction [Invited]
Chinese Optics Letters
  • Jun. 16, 2021
  • Vol.19, Issue 6 (2021)
Editors' Picks
With the rapid development of broadband centers, cloud-based services, the Internet of Things, and 5G services, network traffic is growing at a vigorous rate, which requires optical communication networks with higher capacity and lower power consumption. As the building block of optical communication networks, the function of the optical modulator is to realize the high-speed conversion of information from the electrical domain to the optical domain, and to convert data transmission from cable to ultra-low loss fiber. Lithium niobate (LiNbO3, LN) has been the dominant material platform for optical modulators widely used in optical fiber communications due to its excellent physical properties, such as its high electro-optic (EO) Pockels coefficient, low optical absorption, high intrinsic modulation bandwidth, and long-term material reliability. However, commercial LN modulators rely on titanium-diffused or proton-exchange waveguides. Such weakly confined optical waveguides are not beneficial to achieving strong electro-optic interaction. In the issue, such modulators have low modulation efficiency (~10V·cm) and large device sizes.
Chinese Optics Letters
  • Jun. 17, 2021
  • Vol.19, Issue 6 (2021)
On the Cover
Topology is an important branch of mathematics formed in the 19th century. It studies the invariant properties of geometric figures or space under continuous deformation. The idea of topological physics originated from the exciting discovery of the integer quantum Hall effect (IQHE) in condensed-state physics. Klitzing found that the two-dimensional (2D) electron gas in a strong perpendicular magnetic field has a quantized Hall conductance. The quantization originates from the non-trivial topology of the energy band structure, which is characterized by the Chern number according to the theoretical work of Thouless, Kohmoto, Nightingale, and den Nijs (TKNN). Haldane and Raghu creatively introduced the concept of topology to photonic crystals for the first time, as they proposed a photonics analogue of the quantum Hall effect in photonic crystals. Edge states appear at the domain wall between materials that have different Chern numbers and go through the topological bandgap in momentum space according to the bulk-edge correspondence.
Chinese Optics Letters
  • Jun. 04, 2021
  • Vol.19, Issue 5 (2021)
Editors' Picks
Plasmonic color printing has several advantages over traditional color dyes printing: sub-wavelength resolution, the production of bright and non-fading colors. In general, the reflected color from metallic structures is determined by the plasmonic resonance, which is highly sensitive to the structure geometry and optical constants. Tuning the geometries and size of the plasmonic nanostructures is a means to tailoring absorption spectra in the visible frequency range.
Chinese Optics Letters
  • Jun. 03, 2021
  • Vol.19, Issue 5 (2021)
Editors' Picks
Textile dyeing plays an indispensable role in our daily life, enriching peoples choices of the textile and satisfying our desire for aesthetics. In general, traditional textile dyeing is mainly based on chemical pigments. However, the old-fashioned technique may lead to environmental pollution and health concerns. Fortunately, structural colors found in the natural world inspire people to utilize nanostructures to achieve coloration meanwhile avoid the abovementioned problems. Structural colors originate from the interaction of light with photonic structures whose feature sizes are comparable to visible wavelengths. These interactions include interference, diffraction, scattering, or their combination.
Chinese Optics Letters
  • May. 27, 2021
  • Vol.19, Issue 5 (2021)