IEICE TRANSACTIONS on Electronics
Cascade Connection of Two Long-Period Fiber Gratings with a π-Phase Shift to Expand the Rejection Bandwidths
Summary :
A novel method was developed to expand and adjust the bandwidth of long-period fiber gratings (LPFGs) as band-rejection filters. The band-rejection filters were constructed by concatenating two LPFGs with an appropriate space, that causes a π-phase shift. The component LPFGs with the same period and the different numbers of periods are designed to have -3-dB transmission at wavelengths on both sides of a resonance wavelength symmetrically, and the transmission loss of the concatenated LPFGs peaks at the -3-dB transmission wavelengths. The rejection bandwidth was widened by changing the interval between the -3-dB transmission wavelengths. The concatenated LPFGs were simulated by using a transfer-matrix method based on a discrete coupling model, and were fabricated by a point-by-point arc discharge technique on the basis of the simulation results. It was demonstrated that the rejection bandwidth at 20-dB attenuation reached 26.6 nm and was 2.7 times broader than that of a single uniform LPFG.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E98-C No.6 pp.512-517
- Publication Date
- 2015/06/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E98.C.512
- Type of Manuscript
- PAPER
- Category
- Optoelectronics
Authors
Fatemeh ABRISHAMIAN
Osaka Electro-Communication University
Katsumi MORISHITA
Osaka Electro-Communication University
Keyword
Latest Issue
Copyrights notice of machine-translated contents
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Cite this
Copy
Fatemeh ABRISHAMIAN, Katsumi MORISHITA, "Cascade Connection of Two Long-Period Fiber Gratings with a $pi$-Phase Shift to Expand the Rejection Bandwidths" in IEICE TRANSACTIONS on Electronics,
vol. E98-C, no. 6, pp. 512-517, June 2015, doi: 10.1587/transele.E98.C.512.
Abstract: A novel method was developed to expand and adjust the bandwidth of long-period fiber gratings (LPFGs) as band-rejection filters. The band-rejection filters were constructed by concatenating two LPFGs with an appropriate space, that causes a π-phase shift. The component LPFGs with the same period and the different numbers of periods are designed to have -3-dB transmission at wavelengths on both sides of a resonance wavelength symmetrically, and the transmission loss of the concatenated LPFGs peaks at the -3-dB transmission wavelengths. The rejection bandwidth was widened by changing the interval between the -3-dB transmission wavelengths. The concatenated LPFGs were simulated by using a transfer-matrix method based on a discrete coupling model, and were fabricated by a point-by-point arc discharge technique on the basis of the simulation results. It was demonstrated that the rejection bandwidth at 20-dB attenuation reached 26.6 nm and was 2.7 times broader than that of a single uniform LPFG.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E98.C.512/_p
Copy
@ARTICLE{e98-c_6_512,
author={Fatemeh ABRISHAMIAN, Katsumi MORISHITA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Cascade Connection of Two Long-Period Fiber Gratings with a $pi$-Phase Shift to Expand the Rejection Bandwidths},
year={2015},
volume={E98-C},
number={6},
pages={512-517},
abstract={A novel method was developed to expand and adjust the bandwidth of long-period fiber gratings (LPFGs) as band-rejection filters. The band-rejection filters were constructed by concatenating two LPFGs with an appropriate space, that causes a π-phase shift. The component LPFGs with the same period and the different numbers of periods are designed to have -3-dB transmission at wavelengths on both sides of a resonance wavelength symmetrically, and the transmission loss of the concatenated LPFGs peaks at the -3-dB transmission wavelengths. The rejection bandwidth was widened by changing the interval between the -3-dB transmission wavelengths. The concatenated LPFGs were simulated by using a transfer-matrix method based on a discrete coupling model, and were fabricated by a point-by-point arc discharge technique on the basis of the simulation results. It was demonstrated that the rejection bandwidth at 20-dB attenuation reached 26.6 nm and was 2.7 times broader than that of a single uniform LPFG.},
keywords={},
doi={10.1587/transele.E98.C.512},
ISSN={1745-1353},
month={June},}
Copy
TY - JOUR
TI - Cascade Connection of Two Long-Period Fiber Gratings with a $pi$-Phase Shift to Expand the Rejection Bandwidths
T2 - IEICE TRANSACTIONS on Electronics
SP - 512
EP - 517
AU - Fatemeh ABRISHAMIAN
AU - Katsumi MORISHITA
PY - 2015
DO - 10.1587/transele.E98.C.512
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E98-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2015
AB - A novel method was developed to expand and adjust the bandwidth of long-period fiber gratings (LPFGs) as band-rejection filters. The band-rejection filters were constructed by concatenating two LPFGs with an appropriate space, that causes a π-phase shift. The component LPFGs with the same period and the different numbers of periods are designed to have -3-dB transmission at wavelengths on both sides of a resonance wavelength symmetrically, and the transmission loss of the concatenated LPFGs peaks at the -3-dB transmission wavelengths. The rejection bandwidth was widened by changing the interval between the -3-dB transmission wavelengths. The concatenated LPFGs were simulated by using a transfer-matrix method based on a discrete coupling model, and were fabricated by a point-by-point arc discharge technique on the basis of the simulation results. It was demonstrated that the rejection bandwidth at 20-dB attenuation reached 26.6 nm and was 2.7 times broader than that of a single uniform LPFG.
ER -
English
