Lensed-taper launching coupler for small-bore, infrared hollow fibers

Yuji Matsuura; Hajime Hiraga; You Wang; Yuji Kato; Mitsunobu Miyagi; Shin Ichi Abe; Shinji Onodera

doi:10.1364/AO.36.007818

Lensed-taper launching coupler for small-bore, infrared hollow fibers

Yuji Matsuura, Hajime Hiraga, You Wang, Yuji Kato, Mitsunobu Miyagi, Shin Ichi Abe, Shinji Onodera

MEN - Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

A new type of launching coupler for small-bore, hollow fibers, consisting of a lens and a tapered hollow waveguide, is proposed to increase the alignment tolerance between an input laser beam and small bore fibers. First, we designed the structural dimensions of the coupler by using a ray-tracing method. Then, a series of experiments employing tapered hollow waveguides made of Pyrex glass was performed to investigate the effectiveness of the new coupler. It is shown that the coupler has a high efficiency with attenuation of around 0.5 dB, especially when the inside of the taper section is coated with a polymer and silver film. In addition, we also show that the coupler has great tolerance for the transverse displacement of a waveguide axis, which gives a 0.1-dB loss increase for a 300-ॖm displacement.

Original language	English
Pages (from-to)	7818-7821
Number of pages	4
Journal	Applied optics
Volume	36
Issue number	30
DOIs	https://doi.org/10.1364/AO.36.007818
Publication status	Published - 1997 Oct 20

Keywords

Hollow waveguide
Infrared fiber optics
Infrared laser

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

Access to Document

10.1364/AO.36.007818

Cite this

@article{46dac104b6eb4e6abe36613a9a4d1af4,

title = "Lensed-taper launching coupler for small-bore, infrared hollow fibers",

abstract = "A new type of launching coupler for small-bore, hollow fibers, consisting of a lens and a tapered hollow waveguide, is proposed to increase the alignment tolerance between an input laser beam and small bore fibers. First, we designed the structural dimensions of the coupler by using a ray-tracing method. Then, a series of experiments employing tapered hollow waveguides made of Pyrex glass was performed to investigate the effectiveness of the new coupler. It is shown that the coupler has a high efficiency with attenuation of around 0.5 dB, especially when the inside of the taper section is coated with a polymer and silver film. In addition, we also show that the coupler has great tolerance for the transverse displacement of a waveguide axis, which gives a 0.1-dB loss increase for a 300-ॖm displacement.",

keywords = "Hollow waveguide, Infrared fiber optics, Infrared laser",

author = "Yuji Matsuura and Hajime Hiraga and You Wang and Yuji Kato and Mitsunobu Miyagi and Abe, {Shin Ichi} and Shinji Onodera",

year = "1997",

month = oct,

day = "20",

doi = "10.1364/AO.36.007818",

language = "English",

volume = "36",

pages = "7818--7821",

journal = "Applied Optics",

issn = "0003-6935",

publisher = "The Optical Society",

number = "30",

}

TY - JOUR

T1 - Lensed-taper launching coupler for small-bore, infrared hollow fibers

AU - Matsuura, Yuji

AU - Hiraga, Hajime

AU - Wang, You

AU - Kato, Yuji

AU - Miyagi, Mitsunobu

AU - Abe, Shin Ichi

AU - Onodera, Shinji

PY - 1997/10/20

Y1 - 1997/10/20

N2 - A new type of launching coupler for small-bore, hollow fibers, consisting of a lens and a tapered hollow waveguide, is proposed to increase the alignment tolerance between an input laser beam and small bore fibers. First, we designed the structural dimensions of the coupler by using a ray-tracing method. Then, a series of experiments employing tapered hollow waveguides made of Pyrex glass was performed to investigate the effectiveness of the new coupler. It is shown that the coupler has a high efficiency with attenuation of around 0.5 dB, especially when the inside of the taper section is coated with a polymer and silver film. In addition, we also show that the coupler has great tolerance for the transverse displacement of a waveguide axis, which gives a 0.1-dB loss increase for a 300-ॖm displacement.

AB - A new type of launching coupler for small-bore, hollow fibers, consisting of a lens and a tapered hollow waveguide, is proposed to increase the alignment tolerance between an input laser beam and small bore fibers. First, we designed the structural dimensions of the coupler by using a ray-tracing method. Then, a series of experiments employing tapered hollow waveguides made of Pyrex glass was performed to investigate the effectiveness of the new coupler. It is shown that the coupler has a high efficiency with attenuation of around 0.5 dB, especially when the inside of the taper section is coated with a polymer and silver film. In addition, we also show that the coupler has great tolerance for the transverse displacement of a waveguide axis, which gives a 0.1-dB loss increase for a 300-ॖm displacement.

KW - Hollow waveguide

KW - Infrared fiber optics

KW - Infrared laser

UR - http://www.scopus.com/inward/record.url?scp=0031248118&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031248118&partnerID=8YFLogxK

U2 - 10.1364/AO.36.007818

DO - 10.1364/AO.36.007818

M3 - Article

C2 - 18264307

AN - SCOPUS:0031248118

VL - 36

SP - 7818

EP - 7821

JO - Applied Optics

JF - Applied Optics

SN - 0003-6935

IS - 30

ER -

Lensed-taper launching coupler for small-bore, infrared hollow fibers

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this