A5041233553- Advanced Fiber Laser Technologies
- Advanced Photonic Communication Systems
- Optical Network Technologies
- Photonic and Optical Devices
- Liquid Crystal Research Advancements
- Photonic Crystals and Applications
- Advanced Measurement and Detection Methods
- Plant and animal studies
- Laser-Matter Interactions and Applications
- Industrial Vision Systems and Defect Detection
- Surface Roughness and Optical Measurements
- Image and Object Detection Techniques
Tiangong University
2024
Electronics and Telecommunications Research Institute
2018-2023
Purdue University West Lafayette
2011-2012
Tokyo Institute of Technology
2004-2006
Korea Advanced Institute of Science and Technology
2006
Lasing via a phase retardation defect mode is reported for the first time. The Figure shows far‐field pattern of laser emission realized by inserting an anisotropic nematic liquid crystal (LC) layer between polymer cholesteric LC layers. system mimics cuticle Plusiotis resplendens , beetle, using birefringence to achieve reflectance greater than 50 % provided simple photonic bandgaps.
A novel defect mode is realized in a three-layered structure: left-handed cholesteric liquid crystal (CLC) layer sandwiched between right-handed CLC films (see Figure). The states emerge, and the photonic density of state resonantly enhanced when coincides with edge mode. lasing from this found to show lower threshold value.
Abstract A liquid crystal (LC) photonic device with an anisotropic optical heterojunction structure has been fabricated. The a phase‐retarding nematic LC (NLC) layer sandwiched between two polymer cholesteric films right‐handed helices of different pitches. Electrotunable non‐reciprocal light transmittance and unidirectional circularly polarized (CP) lasing emission have successfully demonstrated for this structure. Two left CP (LCP) peaks are observed at the edges overlapping region bands...
Plant height is an important parameter of plant phenotype as one indicator growth. In view the complexity and scale limitation in current measurement systems, a scaleless method proposed for automatic based on monocular computer vision. this study, four peppers planted side by were used objects. Two color images object obtained using camera at different shooting heights. Binary processed super-green grayscale Otsu method. The binarized transformed into horizontal one-dimensional data...
A novel scheme for the generation of an optical frequency comb with exceptionally high flatness a large number spectral lines is proposed. The consists dual‐parallel Mach–Zehnder modulator (DP‐MZM) which to carve narrow intensity pulse and phase modulators application chirp. experimental results show perfect profiles 35 <1 dB 54 at 1.6 when DP‐MZM combined two three modulators, respectively.
Optical frequency comb generators, when combined with line-by-line pulse shaping, allow for the synthesis of programmable microwave photonic phase filters. The filter's achievable time-bandwidth product is related to number lines that can be individually manipulated. In this contribution, we present a flat ultra-broad optical generator based on external non-linear broadening in highly nonlinear fiber. We show source used achieve filter >80 complex-coefficient taps. illustrate potential by...
Abstract— We have developed the world's largest TFT‐LCD, which has a 55‐in.‐diagonal size. This LCD features 1920 × 1080 (16:9) resolution for full‐HDTV images, 500‐nit luminance, 72% color gamut, and 12‐msec response time at all gray levels. The size of panel (55 in.) was determined by maximum efficiency our fifth‐generation line (glass size: 1100 1250 mm). To overcome limitation in photolithography equipment, new stitcking‐free technology applied both TFT color‐filter side. And super‐IPS...
Using electro-optic modulators, we generate a 41-line 10-GHz spaced Gaussian-shaped optical comb. We use this comb to demonstrate apodized microwave photonic filters with greater than 43-dB sidelobe suppression, without the need for pulse shaper.
We present flat-top microwave photonic filters through amplitude and phase shaping of optical frequency combs. Flat-topped with greater than 27-dB stopband loss are demonstrated using 32 taps both positive negative tap coefficients.
In this study, we present flexible flat-top coherent supercontinuum sources via electro-optic optical frequency comb and iterative line-by-line amplitude/phase shaping techniques. We demonstrate programmability tunability in terms of repetition rate, bandwidth, spectral range while maintaining stable characteristics.
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text A. M. Weiner, E. Hamidi, F. Ferdous, D. Leaird, C. Long, J. Metcalf, H. Song, V. R. Supradeepa, Torres-Company, and Wu, "Broadband Optical Processing Techniques for Ultrabroadband RF," in Fiber Communication Conference, OSA Technical Digest (Optica Publishing Group, 2012), paper OW4H.3. Export BibTex Endnote (RIS) HTML Plain alert Save article