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Chin. Opt. Lett.
Research Highlights
Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation

We propose a simple gradation representation method using a binary-weighted computer-generated hologram (CGH) to be displayed on a high-speed spatial light modulator that can be controlled by the pulse-width modulation technique. The proposed method uses multiple bit planes comprising binary-weighted CGHs with various pulse widths. The object points of a three-dimensional (3D) object are assigned ...
Experimental assessment of a 3-D plenoptic endoscopic imaging system

An endoscopic imaging system using a plenoptic technique to reconstruct 3-D information is demonstrated and analyzed in this Letter. The proposed setup integrates a clinical surgical endoscope with a plenoptic camera to achieve a depth accuracy error of about 1 mm and a precision error of about 2 mm, within a 25 mm×25 mm field of view, operating at 11 frames per second.
Auxiliary resonant scanner to increase the scanning capability of coarse integral holographic displays

This Letter proposes a scanned holographic display system that takes the advantage of a high-speed resonant scanner to augment a galvanometer and hence improves the opto-mechanical information distribution capabilities, thereby potentially achieving an increased image size and enlarged viewing angles. 
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...
COL Cover Story: Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation [09/06/2017]

Holography can directly record and faithfully reconstruct a three-dimensional (3D) image. A computer-generated hologram (CGH) is a holographic interference pattern obtained by calculating the light propagated from a 3D object using a...
COL Cover Story: Experimental assessment of a 3D plenoptic endoscopic imaging system [31/03/2017]

A realistic three-dimensional (3D) reconstruction of a surgical site has become a highly needed imaging method in minimally invasive surgery. To date, common clinical and research efforts have employed 3D reconstruction methods based...
COL Cover Story: Auxiliary Resonant Scanner to Increase the Scanning Capability for Coarse Integral Holographic Displays [31/03/2017]

The light propagation reconstruction feature supported by holography can provide all necessary 3D visual information, in theory. Therefore, holographic display has been considered as the promising candidate of the futuristic 3D ...
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...
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