Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber

Hoseong Song; Young Jae Kim; Dong Uk Kim; Woosub Song; Dug Young Kim

doi:10.1117/12.700084

Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber

Hoseong Song, Young Jae Kim, Dong Uk Kim, Woosub Song, Dug Young Kim

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We constructed a passively mode-locked Er-doped fiber laser (PML-EDFL). It generates ∼ 1.3 ps pulses at a repetition rate of 12 MHz with an average output power of 0.7 mW. These pulses are amplified in a short Er-doped fiber amplifier (EDFA) which is composed of low nonlinearity EDF. The average power of amplified pulse is about 15 mW. And its pulse width is about 880 fs. An all-fiber supercontinuum (SC) is generated by putting the amplified fiber laser pulse at the wavelength of 1. 56 μm into the highly nonlinear dispersion shifted fiber (HN-DSF) whose zero dispersion wavelength is 1.537 μm and nonlinear coefficient is about 10.5/W/km at the input wavelength. The polarization state of the generated SC spectra is well defined such that it can be properly controlled by the polarization controller. By using a delayed pulsed method, we report an experimental study of the coherence of SC spectra generated through a HN-DSF. In this paper, the strong dependence of the spectral coherence on the HN-DSF length is observed experimentally. And optimal conditions for obtaining wide SC with high coherence are investigated in detail. We believed that our proposed all-fiber laser based SC source with high coherence has many important applications in recently developed frequency-domain measurement techniques such as optical coherence tomography (OCT), optical frequency domain imaging (OFDI), optical frequency domain reflectometry (OFDR) and their instrumentation.

Original language	English
Title of host publication	Fiber Lasers IV
Subtitle of host publication	Technology, Systems, and Applications
DOIs	https://doi.org/10.1117/12.700084
Publication status	Published - 2007
Event	Fiber Lasers IV: Technology, Systems, and Applications - San Jose, CA, United States Duration: 2007 Jan 22 → 2007 Jan 25

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6453
ISSN (Print)	0277-786X

Other

Other	Fiber Lasers IV: Technology, Systems, and Applications
Country	United States
City	San Jose, CA
Period	07/1/22 → 07/1/25

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.700084

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title = "Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber",

abstract = "We constructed a passively mode-locked Er-doped fiber laser (PML-EDFL). It generates ∼ 1.3 ps pulses at a repetition rate of 12 MHz with an average output power of 0.7 mW. These pulses are amplified in a short Er-doped fiber amplifier (EDFA) which is composed of low nonlinearity EDF. The average power of amplified pulse is about 15 mW. And its pulse width is about 880 fs. An all-fiber supercontinuum (SC) is generated by putting the amplified fiber laser pulse at the wavelength of 1. 56 μm into the highly nonlinear dispersion shifted fiber (HN-DSF) whose zero dispersion wavelength is 1.537 μm and nonlinear coefficient is about 10.5/W/km at the input wavelength. The polarization state of the generated SC spectra is well defined such that it can be properly controlled by the polarization controller. By using a delayed pulsed method, we report an experimental study of the coherence of SC spectra generated through a HN-DSF. In this paper, the strong dependence of the spectral coherence on the HN-DSF length is observed experimentally. And optimal conditions for obtaining wide SC with high coherence are investigated in detail. We believed that our proposed all-fiber laser based SC source with high coherence has many important applications in recently developed frequency-domain measurement techniques such as optical coherence tomography (OCT), optical frequency domain imaging (OFDI), optical frequency domain reflectometry (OFDR) and their instrumentation.",

author = "Hoseong Song and Kim, {Young Jae} and Kim, {Dong Uk} and Woosub Song and Kim, {Dug Young}",

year = "2007",

doi = "10.1117/12.700084",

language = "English",

isbn = "0819465666",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Fiber Lasers IV",

note = "Fiber Lasers IV: Technology, Systems, and Applications ; Conference date: 22-01-2007 Through 25-01-2007",

}

Song, H, Kim, YJ, Kim, DU, Song, W & Kim, DY 2007, Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber. in Fiber Lasers IV: Technology, Systems, and Applications., 645329, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6453, Fiber Lasers IV: Technology, Systems, and Applications, San Jose, CA, United States, 07/1/22. https://doi.org/10.1117/12.700084

Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber. / Song, Hoseong; Kim, Young Jae; Kim, Dong Uk; Song, Woosub; Kim, Dug Young.

Fiber Lasers IV: Technology, Systems, and Applications. 2007. 645329 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6453).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber

AU - Song, Hoseong

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AU - Kim, Dong Uk

AU - Song, Woosub

AU - Kim, Dug Young

PY - 2007

Y1 - 2007

N2 - We constructed a passively mode-locked Er-doped fiber laser (PML-EDFL). It generates ∼ 1.3 ps pulses at a repetition rate of 12 MHz with an average output power of 0.7 mW. These pulses are amplified in a short Er-doped fiber amplifier (EDFA) which is composed of low nonlinearity EDF. The average power of amplified pulse is about 15 mW. And its pulse width is about 880 fs. An all-fiber supercontinuum (SC) is generated by putting the amplified fiber laser pulse at the wavelength of 1. 56 μm into the highly nonlinear dispersion shifted fiber (HN-DSF) whose zero dispersion wavelength is 1.537 μm and nonlinear coefficient is about 10.5/W/km at the input wavelength. The polarization state of the generated SC spectra is well defined such that it can be properly controlled by the polarization controller. By using a delayed pulsed method, we report an experimental study of the coherence of SC spectra generated through a HN-DSF. In this paper, the strong dependence of the spectral coherence on the HN-DSF length is observed experimentally. And optimal conditions for obtaining wide SC with high coherence are investigated in detail. We believed that our proposed all-fiber laser based SC source with high coherence has many important applications in recently developed frequency-domain measurement techniques such as optical coherence tomography (OCT), optical frequency domain imaging (OFDI), optical frequency domain reflectometry (OFDR) and their instrumentation.

AB - We constructed a passively mode-locked Er-doped fiber laser (PML-EDFL). It generates ∼ 1.3 ps pulses at a repetition rate of 12 MHz with an average output power of 0.7 mW. These pulses are amplified in a short Er-doped fiber amplifier (EDFA) which is composed of low nonlinearity EDF. The average power of amplified pulse is about 15 mW. And its pulse width is about 880 fs. An all-fiber supercontinuum (SC) is generated by putting the amplified fiber laser pulse at the wavelength of 1. 56 μm into the highly nonlinear dispersion shifted fiber (HN-DSF) whose zero dispersion wavelength is 1.537 μm and nonlinear coefficient is about 10.5/W/km at the input wavelength. The polarization state of the generated SC spectra is well defined such that it can be properly controlled by the polarization controller. By using a delayed pulsed method, we report an experimental study of the coherence of SC spectra generated through a HN-DSF. In this paper, the strong dependence of the spectral coherence on the HN-DSF length is observed experimentally. And optimal conditions for obtaining wide SC with high coherence are investigated in detail. We believed that our proposed all-fiber laser based SC source with high coherence has many important applications in recently developed frequency-domain measurement techniques such as optical coherence tomography (OCT), optical frequency domain imaging (OFDI), optical frequency domain reflectometry (OFDR) and their instrumentation.

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M3 - Conference contribution

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BT - Fiber Lasers IV

T2 - Fiber Lasers IV: Technology, Systems, and Applications

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Coherence measurements of supercontinuum source based on a fiber laser and highly nonlinear dispersion shifted fiber

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