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Chin. Opt. Lett.
Research Highlights
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Upstream dispersion management of 25 Gb/s duobinary and PAM-4 signals to support 0–40 km differential reach

We extensively discuss 25 Gb/s per wavelength capacity in both IEEE and ITU-T standardization to support the increasing bandwidth requirement. In this Letter, we propose to use the optical dispersion compensation technique in an optical line terminal (OLT) combined with a bandwidth-limited electro-absorption modulated laser in an optical network unit to achieve 25 Gb/s capacity for the upstream li...
Three-dimensional imaging lidar system based on high speed pseudorandom modulation and photon counting

High speed pseudorandom modulation and photon counting techniques are applied to a three-dimensional imaging lidar system. The specific structure and working principle of the lidar system is described. The actual detector efficiency of a single-photon detector in an imaging system is discussed, and the result shows that a variety of reasons lead to the decrease in detection efficiency. A series of...
Prototype of solar ground layer adaptive optics at the 1-m New Vacuum Solar Telescope

A prototype of a solar ground-layer adaptive optics (GLAO) system, which consists of a multi-direction correlating Shack–Hartmann wavefront sensor with 30 effective subapertures and about a 1 arcmin field of view (FoV) in each subaperture, a deformable mirror with 151 actuators conjugated to the telescope entrance pupil, and a custom-built real-time controller based on field-programmable gate arra...
Actively Q-switched ring Tm-doped fiber laser with free space structure

We report a cladding-pumped actively Q-switched ring Tm-doped fiber laser (TDFL). This laser is Q-switched by a free space acousto-optic modulator. A pulse energy up to 150 μJ with a pulse width of 207 ns at a repetition rate of 100 Hz is achieved for a cavity optical length of 6.68 m. The pulse amplitude’s stability at this repetition rate is better than 95%. To the best of our knowledge, this is...
Announcements
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Feature Issue Announcement: Photonics based on 2D noncarbon materials [07/03/2017]

Two-dimensional (2D) noncarbon materials with outstanding optical properties are catching worldwide attentions on the heels of the discovery of graphene. Besides the large 2D family of transition metal dichalcogenides (TMDs...
COL Cover Story: Efficient upstream data transmission by joint scheme of dispersion compensation and electro-modulation [08/02/2017]

With the worldwide applications of emerging multi-mediaservices and mobile fronthaul, the user’s bandwidth demand is constantly increasing.So the passive optical network (PON) with 100 Gb/s system capacity supporting25 Gb/s data rate...
COL Cover Story: Three-dimensional imaging lidar system based on high speed pseudorandom modulation and photon counting [21/11/2016]

Laser radar technologyhas been developed rapidly since the advent of laser. Among various laser radars,the three-dimensional (3D) imaging lidar has been of great concern. Thetraditional 3D imaging radar based on direct detection mode...
Special Issue Announcement: Optical Methods for Life Sciences [10/11/2016]

Chinese Optics Letters (COL) invites original manuscript submissions for a Special Issue on Optical Methods for Life Sciences to be published in September 2017. This issue will focus on the cutting-edge optical techniques and its app...
COL Cover Story: Prototype of solar ground layer adaptive optics at the 1-m New Vacuum Solar Telescope [09/10/2016]

Adaptive optics (AO) is an indispensable technique in ground-based solar imaging which provides diffraction limited resolution. However, the traditional AO technique has only a very small corrected field of view (FoV) (~ 10 arcsec), ...
Chinese Optics Letters New Executive Editor-in-Chief Announcement [23/09/2016]

Chinese Laser Press is privileged to announce the appointment of new Executive Editor-in-Chief David Hagan for one subordinate journal of its publications,Chinese Optics Letters (COL). Dr. Hagan is Professor of Optics a...
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