Back to Search
Start Over
Ultrafast Surface Imaging With an Increased Spatial Resolution Based on Polarization-Division Multiplexing
- Source :
- Journal of Lightwave Technology. 33:396-402
- Publication Year :
- 2015
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2015.
-
Abstract
- Optical time stretch has been employed for ultrafast optical imaging based on space-to-wavelength-to-time mapping. However, temporal overlap between two adjacent time-stretched pulses is a disadvantageous factor that limits the spatial resolution, or the frame rate has to be reduced by reducing the pulse repetition rate to avoid the temporal overlap. To increase the spatial resolution without reducing the frame rate, we propose a novel technique based on polarization-division multiplexing, using a polarization modulator to generate two polarization interleaved pulse trains. Since two adjacent optical pulses are orthogonally polarized, the spacing between two adjacent pulses for one polarization direction is doubled, and the spatial resolution is doubled by using a dispersive element with two times the dispersion. The proposed approach is experimentally evaluated. An imaging system with an increased spatial resolution is demonstrated.
- Subjects :
- Physics
business.industry
Image quality
02 engineering and technology
Polarization-division multiplexing
Polarization (waves)
Frame rate
01 natural sciences
Multiplexing
Atomic and Molecular Physics, and Optics
010309 optics
020210 optoelectronics & photonics
Optics
Optical imaging
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
business
Image resolution
Ultrashort pulse
Subjects
Details
- ISSN :
- 15582213 and 07338724
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Journal of Lightwave Technology
- Accession number :
- edsair.doi...........a1e09a305bdd4e899ec0b65323882735