IEICE TRANSACTIONS on Electronics
Recent Studies on InGaAsP and TiO2/Si Planar Asymmetric Coupled Waveguides as Dispersion Compensators
Summary :
Two planar asymmetric coupled waveguides were fabricated by using different materials (InGaAsP and TiO2/Si) and tested as dispersion compensators (or pulse compressors). Compression of a more-than-10-ps chirped pulse is experimentally demonstrated by using an InGaAsP planar asymmetric coupled waveguide whose group velocity dispersion (GVD) is enhanced by structural optimization and is spectrally tuned to an input pulse as precisely as possible. A large polarization dependence of the pulse compression was also observed and indicates that the observed pulse compression results from dispersion compensation due to the GVD associated with supermodes. A new planar, asymmetric coupled waveguide with a large difference in refractive indices of the two waveguides was fabricated by using a combination of dielectric (TiO2) and semiconductor (Si) materials in order to obtain better GVD characteristics than semiconductor (for example, InGaAsP) asymmetric coupled waveguides. A preliminary experiment on pulse compression using the TiO2/Si planar asymmetric coupled waveguide was conducted. A 2.8-ps blue chirped pulse was compressed down to about 1 ps by a 1-mm-long waveguide (compression ratio: 0.375, which is better than those of the previous InGaAsP planar asymmetric coupled waveguides). This compression ratio agrees well with a theoretical result obtained by a numerical model based on a supermode's GVD.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E85-C No.1 pp.190-194
- Publication Date
- 2002/01/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Issue on Ultrafast Optical Signal Processing and Its Application)
- Category
Authors
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
Yong LEE, "Recent Studies on InGaAsP and TiO2/Si Planar Asymmetric Coupled Waveguides as Dispersion Compensators" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 1, pp. 190-194, January 2002, doi: .
Abstract: Two planar asymmetric coupled waveguides were fabricated by using different materials (InGaAsP and TiO2/Si) and tested as dispersion compensators (or pulse compressors). Compression of a more-than-10-ps chirped pulse is experimentally demonstrated by using an InGaAsP planar asymmetric coupled waveguide whose group velocity dispersion (GVD) is enhanced by structural optimization and is spectrally tuned to an input pulse as precisely as possible. A large polarization dependence of the pulse compression was also observed and indicates that the observed pulse compression results from dispersion compensation due to the GVD associated with supermodes. A new planar, asymmetric coupled waveguide with a large difference in refractive indices of the two waveguides was fabricated by using a combination of dielectric (TiO2) and semiconductor (Si) materials in order to obtain better GVD characteristics than semiconductor (for example, InGaAsP) asymmetric coupled waveguides. A preliminary experiment on pulse compression using the TiO2/Si planar asymmetric coupled waveguide was conducted. A 2.8-ps blue chirped pulse was compressed down to about 1 ps by a 1-mm-long waveguide (compression ratio: 0.375, which is better than those of the previous InGaAsP planar asymmetric coupled waveguides). This compression ratio agrees well with a theoretical result obtained by a numerical model based on a supermode's GVD.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_1_190/_p
Copy
@ARTICLE{e85-c_1_190,
author={Yong LEE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Recent Studies on InGaAsP and TiO2/Si Planar Asymmetric Coupled Waveguides as Dispersion Compensators},
year={2002},
volume={E85-C},
number={1},
pages={190-194},
abstract={Two planar asymmetric coupled waveguides were fabricated by using different materials (InGaAsP and TiO2/Si) and tested as dispersion compensators (or pulse compressors). Compression of a more-than-10-ps chirped pulse is experimentally demonstrated by using an InGaAsP planar asymmetric coupled waveguide whose group velocity dispersion (GVD) is enhanced by structural optimization and is spectrally tuned to an input pulse as precisely as possible. A large polarization dependence of the pulse compression was also observed and indicates that the observed pulse compression results from dispersion compensation due to the GVD associated with supermodes. A new planar, asymmetric coupled waveguide with a large difference in refractive indices of the two waveguides was fabricated by using a combination of dielectric (TiO2) and semiconductor (Si) materials in order to obtain better GVD characteristics than semiconductor (for example, InGaAsP) asymmetric coupled waveguides. A preliminary experiment on pulse compression using the TiO2/Si planar asymmetric coupled waveguide was conducted. A 2.8-ps blue chirped pulse was compressed down to about 1 ps by a 1-mm-long waveguide (compression ratio: 0.375, which is better than those of the previous InGaAsP planar asymmetric coupled waveguides). This compression ratio agrees well with a theoretical result obtained by a numerical model based on a supermode's GVD.},
keywords={},
doi={},
ISSN={},
month={January},}
Copy
TY - JOUR
TI - Recent Studies on InGaAsP and TiO2/Si Planar Asymmetric Coupled Waveguides as Dispersion Compensators
T2 - IEICE TRANSACTIONS on Electronics
SP - 190
EP - 194
AU - Yong LEE
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2002
AB - Two planar asymmetric coupled waveguides were fabricated by using different materials (InGaAsP and TiO2/Si) and tested as dispersion compensators (or pulse compressors). Compression of a more-than-10-ps chirped pulse is experimentally demonstrated by using an InGaAsP planar asymmetric coupled waveguide whose group velocity dispersion (GVD) is enhanced by structural optimization and is spectrally tuned to an input pulse as precisely as possible. A large polarization dependence of the pulse compression was also observed and indicates that the observed pulse compression results from dispersion compensation due to the GVD associated with supermodes. A new planar, asymmetric coupled waveguide with a large difference in refractive indices of the two waveguides was fabricated by using a combination of dielectric (TiO2) and semiconductor (Si) materials in order to obtain better GVD characteristics than semiconductor (for example, InGaAsP) asymmetric coupled waveguides. A preliminary experiment on pulse compression using the TiO2/Si planar asymmetric coupled waveguide was conducted. A 2.8-ps blue chirped pulse was compressed down to about 1 ps by a 1-mm-long waveguide (compression ratio: 0.375, which is better than those of the previous InGaAsP planar asymmetric coupled waveguides). This compression ratio agrees well with a theoretical result obtained by a numerical model based on a supermode's GVD.
ER -
English
