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Fast wavelength-parallel polarimeter for broadband optical networks
1Department of Electrical and Computer Engineering, Purdue University, 465 Northwestern Avenue, West Lafayette, Indiana 47907-2035, USA. wang7@ecn.purdue.edu
Optics Letters
|May 18, 2004
Summary
A new polarimeter rapidly measures polarization across 256 wavelengths, enabling faster optical communications. This advanced sensing technology addresses polarization impairments in high-speed light-wave systems.
Area of Science:
- Optical Engineering
- Photonics
- Telecommunications
Background:
- Polarization-related impairments affect high-speed light-wave communications.
- Accurate and rapid polarization measurement is crucial for compensation.
Purpose of the Study:
- To introduce a novel wavelength-parallel polarimeter.
- To demonstrate its capability for rapid and comprehensive polarization state measurement.
Main Methods:
- Utilized fast-switching ferroelectric liquid crystals.
- Employed an InGaAs arrayed detector for parallel detection.
- Achieved wavelength-parallel selection and detection of polarization components.
Main Results:
- Measured the complete polarization state of 256 wavelengths in parallel.
- Achieved measurement within 20 ms (software-limited), with submillisecond potential.
- Demonstrated component detection within approximately 150 microseconds.
Conclusions:
- The developed polarimeter offers unprecedented sensing capabilities.
- This technology is relevant for compensating polarization impairments in high-speed optical communications.