Extended-Range High-Resolution FMCW Reflectometry by Means of Electronically Frequency-Multiplied Sampling Signal Generated from Auxiliary Interferometer
Summary :
High-resolution FMCW reflectometry is often realized by sampling the beat signal with a clock signal generated from an auxiliary interferometer. The drawback of this system is that the measurement range is limited to less than half of the optical path difference of the auxiliary interferometer to satisfy the Sampling theorem. We propose and demonstrate a method to extend the measurement range of the system. The clock signal gerenerated from the auxiliary interferometer is electronically frequency-multipled by using a PLL circuit. The measurement range is experimentally extended by a factor of 20 while keeping high spatial resolution, and is theoretically extended by a factor of 128. The advantage of the proposed system is that the optical path difference of the auxiliary interferometer can be kept short, which is very effective for obtaining the stable and low time-jitter clock signal.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E89-C No.6 pp.823-829
- Publication Date
- 2006/06/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1093/ietele/e89-c.6.823
- Type of Manuscript
- PAPER
- Category
- Optoelectronics
Authors
Keyword
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Koichi IIYAMA, Makoto YASUDA, Saburo TAKAMIYA, "Extended-Range High-Resolution FMCW Reflectometry by Means of Electronically Frequency-Multiplied Sampling Signal Generated from Auxiliary Interferometer" in IEICE TRANSACTIONS on Electronics,
vol. E89-C, no. 6, pp. 823-829, June 2006, doi: 10.1093/ietele/e89-c.6.823.
Abstract: High-resolution FMCW reflectometry is often realized by sampling the beat signal with a clock signal generated from an auxiliary interferometer. The drawback of this system is that the measurement range is limited to less than half of the optical path difference of the auxiliary interferometer to satisfy the Sampling theorem. We propose and demonstrate a method to extend the measurement range of the system. The clock signal gerenerated from the auxiliary interferometer is electronically frequency-multipled by using a PLL circuit. The measurement range is experimentally extended by a factor of 20 while keeping high spatial resolution, and is theoretically extended by a factor of 128. The advantage of the proposed system is that the optical path difference of the auxiliary interferometer can be kept short, which is very effective for obtaining the stable and low time-jitter clock signal.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e89-c.6.823/_p
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@ARTICLE{e89-c_6_823,
author={Koichi IIYAMA, Makoto YASUDA, Saburo TAKAMIYA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Extended-Range High-Resolution FMCW Reflectometry by Means of Electronically Frequency-Multiplied Sampling Signal Generated from Auxiliary Interferometer},
year={2006},
volume={E89-C},
number={6},
pages={823-829},
abstract={High-resolution FMCW reflectometry is often realized by sampling the beat signal with a clock signal generated from an auxiliary interferometer. The drawback of this system is that the measurement range is limited to less than half of the optical path difference of the auxiliary interferometer to satisfy the Sampling theorem. We propose and demonstrate a method to extend the measurement range of the system. The clock signal gerenerated from the auxiliary interferometer is electronically frequency-multipled by using a PLL circuit. The measurement range is experimentally extended by a factor of 20 while keeping high spatial resolution, and is theoretically extended by a factor of 128. The advantage of the proposed system is that the optical path difference of the auxiliary interferometer can be kept short, which is very effective for obtaining the stable and low time-jitter clock signal.},
keywords={},
doi={10.1093/ietele/e89-c.6.823},
ISSN={1745-1353},
month={June},}
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TY - JOUR
TI - Extended-Range High-Resolution FMCW Reflectometry by Means of Electronically Frequency-Multiplied Sampling Signal Generated from Auxiliary Interferometer
T2 - IEICE TRANSACTIONS on Electronics
SP - 823
EP - 829
AU - Koichi IIYAMA
AU - Makoto YASUDA
AU - Saburo TAKAMIYA
PY - 2006
DO - 10.1093/ietele/e89-c.6.823
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E89-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2006
AB - High-resolution FMCW reflectometry is often realized by sampling the beat signal with a clock signal generated from an auxiliary interferometer. The drawback of this system is that the measurement range is limited to less than half of the optical path difference of the auxiliary interferometer to satisfy the Sampling theorem. We propose and demonstrate a method to extend the measurement range of the system. The clock signal gerenerated from the auxiliary interferometer is electronically frequency-multipled by using a PLL circuit. The measurement range is experimentally extended by a factor of 20 while keeping high spatial resolution, and is theoretically extended by a factor of 128. The advantage of the proposed system is that the optical path difference of the auxiliary interferometer can be kept short, which is very effective for obtaining the stable and low time-jitter clock signal.
ER -
English
