Abstract
With a view to fabricating high glass transition temperature (T g) graded-index plastic optical fiber (GI POF) by the coextrusion process, core material consisting of copolymer of 2,2,2-trichloroethyl methacrylate (TCEMA) and N-cyclohexyl maleimide (cHMI) (P(TCEMA-co-cHMI)), and diphenyl sulfide (DPS) as dopant was newly developed. Although homo polymer of TCEMA (PTCEMA) possesses high T g and high transparency, it was found that PTCEMA began depolymerization at ca. 200 \circ C, which means that PTCEMA-based GI POF fabricated by the coextrusion process has low T g due to depolymerized monomer. By copolymerizing TCEMA with cHMI (5 mol%), the rate of weight loss at constant temperature T = 230°C was drastically decreased (15 wt%/hr). Moreover, the T g linearly increased from 130°C to 197 \circ C with increasing cHMI composition ratio from 0 to 62 wt%, respectively. Scattering loss of the copolymer was increased with the increase of cHMI composition ratio due to the refractive index difference between PTCEMA and PcHMI. It was found that the increment of the scattering loss was suppressed significantly when the copolymer includes DPS (120 dB/km decrease by adding 4 wt% DPS for the copolymer including 5 mol% cHMI). From these results, P(TCEMA-co-cHMI)-based core material was thought to be a promising candidate for high T g GI POF.
| Original language | English |
|---|---|
| Article number | 6125204 |
| Pages (from-to) | 247-251 |
| Number of pages | 5 |
| Journal | Journal of Lightwave Technology |
| Volume | 30 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2012 |
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Keywords
- Graded index plastic optical fiber
- high glass transition temperature
- poly(2,2,2-trichloroethyl methacrylate-co-N- cyclohexyl maleimide)
- thermal degradation
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Fabrication of high glass transition temperature graded-index plastic optical fiber : Part 1- Material preparation and characterizations. / Nakao, Ryosuke; Kondo, Atsushi; Koike, Yasuhiro.
In: Journal of Lightwave Technology, Vol. 30, No. 2, 6125204, 2012, p. 247-251.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of high glass transition temperature graded-index plastic optical fiber
T2 - Part 1- Material preparation and characterizations
AU - Nakao, Ryosuke
AU - Kondo, Atsushi
AU - Koike, Yasuhiro
PY - 2012
Y1 - 2012
N2 - With a view to fabricating high glass transition temperature (T g) graded-index plastic optical fiber (GI POF) by the coextrusion process, core material consisting of copolymer of 2,2,2-trichloroethyl methacrylate (TCEMA) and N-cyclohexyl maleimide (cHMI) (P(TCEMA-co-cHMI)), and diphenyl sulfide (DPS) as dopant was newly developed. Although homo polymer of TCEMA (PTCEMA) possesses high T g and high transparency, it was found that PTCEMA began depolymerization at ca. 200 \circ C, which means that PTCEMA-based GI POF fabricated by the coextrusion process has low T g due to depolymerized monomer. By copolymerizing TCEMA with cHMI (5 mol%), the rate of weight loss at constant temperature T = 230°C was drastically decreased (15 wt%/hr). Moreover, the T g linearly increased from 130°C to 197 \circ C with increasing cHMI composition ratio from 0 to 62 wt%, respectively. Scattering loss of the copolymer was increased with the increase of cHMI composition ratio due to the refractive index difference between PTCEMA and PcHMI. It was found that the increment of the scattering loss was suppressed significantly when the copolymer includes DPS (120 dB/km decrease by adding 4 wt% DPS for the copolymer including 5 mol% cHMI). From these results, P(TCEMA-co-cHMI)-based core material was thought to be a promising candidate for high T g GI POF.
AB - With a view to fabricating high glass transition temperature (T g) graded-index plastic optical fiber (GI POF) by the coextrusion process, core material consisting of copolymer of 2,2,2-trichloroethyl methacrylate (TCEMA) and N-cyclohexyl maleimide (cHMI) (P(TCEMA-co-cHMI)), and diphenyl sulfide (DPS) as dopant was newly developed. Although homo polymer of TCEMA (PTCEMA) possesses high T g and high transparency, it was found that PTCEMA began depolymerization at ca. 200 \circ C, which means that PTCEMA-based GI POF fabricated by the coextrusion process has low T g due to depolymerized monomer. By copolymerizing TCEMA with cHMI (5 mol%), the rate of weight loss at constant temperature T = 230°C was drastically decreased (15 wt%/hr). Moreover, the T g linearly increased from 130°C to 197 \circ C with increasing cHMI composition ratio from 0 to 62 wt%, respectively. Scattering loss of the copolymer was increased with the increase of cHMI composition ratio due to the refractive index difference between PTCEMA and PcHMI. It was found that the increment of the scattering loss was suppressed significantly when the copolymer includes DPS (120 dB/km decrease by adding 4 wt% DPS for the copolymer including 5 mol% cHMI). From these results, P(TCEMA-co-cHMI)-based core material was thought to be a promising candidate for high T g GI POF.
KW - Graded index plastic optical fiber
KW - high glass transition temperature
KW - poly(2,2,2-trichloroethyl methacrylate-co-N- cyclohexyl maleimide)
KW - thermal degradation
UR - http://www.scopus.com/inward/record.url?scp=84856302542&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84856302542&partnerID=8YFLogxK
U2 - 10.1109/JLT.2011.2180700
DO - 10.1109/JLT.2011.2180700
M3 - Article
AN - SCOPUS:84856302542
VL - 30
SP - 247
EP - 251
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 2
M1 - 6125204
ER -