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Passive Components and Fiber-based Devices VI

作者： Peng, Jian Liu, Lisong Fu, Yongjun Wei, Huai Wang, Jing Jian, Shuisheng Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Institute of Lightwave Technology Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9780819480323

The fluorescence intensity ratio (FIR) technique for optical fiber-based temperature sensing is discussed in many previous papers. But in the high temperature sensing the FIR technique has been researched a little. In this paper, the temperature dependence of fluorescence in erbium-doped fiber between ∼700 and ∼1300 °C is discussed and experimentally demonstrated. 1450nm and 1530nm wavelengths are chosen to calculate the FIR, and the temperature coefficient could achieve ∼ 0.003dB/°C. © 2009 SPIE-OSA-IEEE.

关键词： Fluorescence

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Switchable dual-wavelength fiber laser based on PCF Sagnac loop and broadband FBG

Switchable dual-wavelength fiber laser based on PCF Sagnac l...

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Passive Components and Fiber-based Devices VI

作者： Chen, Weiguo Lou, Shuqin Feng, Suchun Wang, Liwen Li, Honglei Guo, Tieying Jian, Shuisheng Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Institute of Lightwave Technology Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9780819480323

Switchable dual-wavelength fiber laser with photonic crystal fiber (PCF) Sagnac loop and broadband fiber Bragg grating (BFBG) at room temperature is demonstrated. By adjusting the polarization controller (PC) appropriately, the laser can be switched between the stable single- and dual-wavelength lasing operations by exploiting polarization hole burning (PHB) and spectral hole burning effects (SHB). © 2009 SPIE-OSA-IEEE.

关键词： Fiber Bragg gratings

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Compact in-fiber mach-zehnder interferometer using a twin-core fiber

Compact in-fiber mach-zehnder interferometer using a twin-co...

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Asia Communications and Photonics Conference and Exhibition, ACP 2009

作者： Feng, Suchun Li, Honglei Xu, Ou Lu, Shaohua Jian, Shuisheng Institute of Lightwave Technology Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9781557528773

A compact in-fiber Mach-Zehnder interferometer is demonstrated by splicing a section of twin-core fiber (TCF) between two single mode fibers (SMFs). Redshift is observed with a sensitivity of about 0.037 nm/°C for increased temperature, whereas blueshift is observed with a sensitivity of about 0.866 pm/μΕ for applied strain changes. © 2009 Optical Society of America.

关键词： Single mode fibers

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Fabrication and design of asymmetrical twin core fiber for passive mode-locking

Fabrication and design of asymmetrical twin core fiber for p...

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Asia Communications and Photonics Conference and Exhibition, ACP 2009

作者： Yao, Lei Lou, Shuqin Liu, Lisong Peng, Jian Jian, Shuisheng Institute of Lightwave Technology Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044 China

We demonstrate the fabrication of a kind of asymmetrical twin core fiber, which is easy spliced with standard single mode fiber. This fiber is designed to be used for passive mode-locking in fiber lasers. © 2009 ... 详细信息

ISBN: (纸本)9781557528773

关键词： Fiber lasers

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Two-mode photonic crystal fiber interferometer for temperature and strain sensing

Two-mode photonic crystal fiber interferometer for temperatu...

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Passive Components and Fiber-based Devices VI

作者： Li, Honglei Lou, Shuqin Feng, Suchun Guo, Tieying Wang, Liwen Chen, Weiguo Jian, Shuisheng Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Institute of Lightwave Technology Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9780819480323

A compact in-line interferometer is demonstrated by splicing a piece of two-mode photonic crystal fiber (TPCF) between two segments of single mode fiber (SMF). The TPCF is completely homemade and carefully simulated by finite element method based on the real cross section. It is firstly verified that the interference occurred between LP01 and LP11even modes and the period of the interference pattern was inversely proportional to the length of TPCF. The temperatures and strain induced interference pattern shifts with sensitivities of -43pm/°C and -0.62pm/μΕ are experimentally monitored. © 2009 SPIE-OSA-IEEE.

关键词： Photonic crystal fibers

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Switchable dual-wavelength fiber laser based on PCF Sagnac loop and broadband FBG

Switchable dual-wavelength fiber laser based on PCF Sagnac l...

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2009 Asia Communications and Photonics Conference and Exhibition, ACP 2009

作者： Chen, Weiguo Lou, Shuqin Wang, Liwen Li, Honglei Guo, Tieying Jian, Shuisheng Institute of Lightwave Technology Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9781557528773

Switchable dual-wavelength fiber laser with photonic crystal fiber (PCF) Sagnac loop and broadband fiber Bragg grating (FBG) at room temperature is demonstrated. By adjusting the polarization controller appropriately, the laser can be switched between stable single- and dual-wavelength lasing operations by exploiting polarization hole burning and spectral hole burning effects . ©2009 Optical Society of America.

关键词： Fiber Bragg gratings

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Switchable dual-wavelength fiber laser based on semiconductor optical amplifier and polarization-maintaining fiber Bragg grating

Switchable dual-wavelength fiber laser based on semiconducto...

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Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration

作者： Feng, Suchun Xu, Ou Lu, Shaohua Ren, Wenhua Jian, Shuisheng Institute of Lightwave Technology Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9780819475381

Switchable dual-wavelength with orthogonal polarizations fiber laser based on semiconductor optical amplifier (SOA) and polarization-maintaining fiber Bragg grating (PMFBG) at room temperature is proposed. Owing to the polarization dependent loss of the PMFBG, the laser can be designed to operate in stable dual-wavelength or wavelength-switching modes with a wavelength spacing of 0.336 nm at room temperature by adjusting the polarization controller (PC). The amplitude variation in nearly half an hour is less than 0.1 dB for both wavelengths, which is more stable than that of erbium doped fiber (EDF)-based laser with similar configuration. © 2009 SPIE.

关键词： Fiber lasers

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High temperature sensing characteristics of erbium-doped fiber using fluorescence intensity ratio technology

High temperature sensing characteristics of erbium-doped fib...

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2009 Asia Communications and Photonics Conference and Exhibition, ACP 2009

作者： Peng, Jian Liu, Lisong Fu, Yongjun Wang, Jing Jian, Shuisheng Institute of Lightwave Technology Key Lab. of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9781557528773

The fluorescence intensity ratio (FIR) technique for optical fiber-based temperature sensing is discussed in many previous papers. But in the high temperature sensing the FIR technique has been researched a little. In this paper, the temperature dependence of fluorescence in erbium-doped fiber between -700 and -1300°C is discussed and experimentally demonstrated. 1450nm and 1530nm wavelengths are chosen to calculate the FIR, and the temperature coefficient could achieve - 0.003dB/°C. ©2009 Optical Society of America.

关键词： Fluorescence

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Switchable Multi-Wavelength Erbium-Doped Fiber Lasers Based on a Mach-Zehnder Interferometer Using a Twin-Core Fiber

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Chinese Physics Letters 2009年第6期26卷 139-142页

作者：冯素春许鸥鲁韶华简水生 Institute of Lightwave Technology Key Lab of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044

A switchable multi-wavelength erbium-doped fiber ring laser based on a compact in-fiber Mach-Zehnder interferometer comb filter at room temperature is presented. The comb filter is formed by splicing a section of twin-core fiber between two single mode fibers. By adjusting the states of the polarization controller appropriately, the laser can be made to operate in stable single-, dual- and three-wavelength lasing states. The operation principle is based on spectral hole burning induced by the saturated effect and polarization hole burning.

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Switchable single-longitudinal-mode dual-wavelength erbium-doped fiber laser based on one polarization-maintaining fiber Bragg grating incorporating saturable absorber

Switchable single-longitudinal-mode dual-wavelength erbium-d...

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Photonics and Optoelectronics Meetings, POEM 2009 - Fiber Optic Communication and Sensors

作者： Feng, Suchun Xu, Ou Lu, Shaohua Chen, Ming Jian, Shuisheng Institute of Lightwave Technology Key Lab. of All Optical Network and Advanced Telecommunication Network of EMC Beijing Jiaotong University Beijing 100044 China

ISBN: (纸本)9780819479037

Switchable single-longitudinal-mode (SLM) dual-wavelength erbium-doped fiber laser at room temperature is demonstrated. One fiber Bragg grating (FBG) directly written in a polarization-maintaining and photosensitive erbiumdoped fiber (PMPEDF) as the wavelength-selective component is used in a linear laser cavity. Due to the polarization hole burning (PHB) enhanced by the polarization-maintaining fiber Bragg grating (PMFBG), the laser can be designed to operate in stable dual-wavelength or wavelength-switching modes with a wavelength spacing of 0.202 nm by adjusting a polarization controller (PC). The stable SLM operation is guaranteed by a saturable absorber (SA). The optical signal-tonoise ratio (OSNR) of the laser is over 40 dB. The amplitude variation in nearly one and half an hour is less than 0.5 dB for both wavelengths. © 2009 Copyright SPIE - The International Society for Optical Engineering.

关键词： Saturable absorbers

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