Active transmission line: light amplification by backward-stimulated Raman scattering in polarization-maintaining optical fiber

Nakazawa, Masataka; Tokuda, Masamitsu; Negishi, Y.; Uchida, Naoya

doi:10.1364/josab.1.000080

Cited by 44 publications

(3 citation statements)

References 16 publications

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“…Both the color center laser and the Ar + laser are too large to be used in a practical device. Nakazawa was collaborating with OKI Electrics to develop a 1.48‐μm LD of GaInAsP with higher power, the purpose of which was originally a pump source for distributed Raman amplifier of transmission fiber by backward pumping . (It is surprising to know that he then got a patent of this idea of distributed Raman, which was too early to effectively work, he says…”

Section: Erbium‐doped Fiber Amplifier and Related Technologiesmentioning

confidence: 99%

Glass and Rare‐Earth Elements: A Personal Perspective

Tanabe

2015

Int J of Appl Glass Sci

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Light-based technologies are strongly supported by various glass materials in general. This article focuses on glasses containing rare-earth elements, doped fibers, as well as their photonic functions such as optical amplifications in fiber telecommunication. Scientific progress and applications of rare-earth spectroscopy and technologies of doped glasses and fibers in recent 60 years have been more than dramatic. Development of various laser diodes has been strongly linked with realization of novel devices of rare-earth-doped glasses. In addition to many milestones listed in the resolution of International Year of Light, we should notice that 2015 is also the 50th anniversary of the erbium-doped glass laser, which is later transformed into the optical fiber amplifier, the enabler of today's information society. *tanabe.setsuhisa.4v@kyoto-u.ac.jp

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Section: Erbium‐doped Fiber Amplifier and Related Technologiesmentioning

confidence: 99%

Glass and Rare‐Earth Elements: A Personal Perspective

Tanabe

2015

Int J of Appl Glass Sci

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“…Although SRS is a resonant effect, the bandwidth of the light amplification can be as much as 100-200 cm −1 so that it enables the amplification of an ultrashort optical pulse with a large gain. [1] Experiments [2,3] have indicated the importance of matching the polarization directions of the pump and probe beams; SRS nearly ceases to occur in the case of orthogonal polarizations. On the other hand, when the polarization directions of the pump and probe beams are maintained in the Raman amplification, a large SRS gain will be obtained, as expected theoretically.…”

Section: Introductionmentioning

confidence: 99%

“…Light amplification through stimulated Raman Stokes scattering (SRS) is a powerful method because no phase matching is needed. Although SRS is a resonant effect, the bandwidth of the light amplification can be as much as 100–200 cm −1 so that it enables the amplification of an ultrashort optical pulse with a large gain 1. Experiments2, 3 have indicated the importance of matching the polarization directions of the pump and probe beams; SRS nearly ceases to occur in the case of orthogonal polarizations.…”

Section: Introductionmentioning

confidence: 99%

Influence of fluorescent dye on the linear polarization direction of stimulated Raman Stokes scattering in liquid‐core optical fibers

Men

Fang

et al. 2010

J Raman Spectroscopy

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We present a simple analytical model to describe the stimulated Raman Stokes scattering (SRS) linear polarization spectroscopy of fluorescent dye solutions in liquid-core optical fibers (LCOFs). In this scheme, the linear polarization direction of the pump pulse is set parallel to the y-axis through a straight polarization-maintaining LCOF, in which the energy of the total optical field E = E p + E s is kept invariant, and different fluorescence dyes are used to generate different first-order Stokes intensities. We demonstrate the SRS of all-trans-β-carotene and fluorescein in carbon disulfide (CS 2 ) solutions due to the optical field-induced reorientation effect, which makes the first-order Stokes polarization direction rotate by an angle of 88 • or 61 • , respectively. This demonstrates the good agreement between the theory presented and the experiment.

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Polarization state and gain of lights interacting through stimulated Raman scattering in single‐mode optical fibers

Seikai¹,

Takahashi²

1990

Electron Comm Jpn Pt II

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The polarization states and gain of the signal and pump lights in an optical amplifier using stimulated Raman scattering in an optical fiber were investigated. Taking into account circular birefringence caused by fiber twist, a coupling equation for the signal and pump lights was obtained. It was assumed that the fiber had a circular core and was uniform in the longitudinal direction and that the field distribution of the dominant mode was Gaussian. With the aid of numerical calculation of the coupling equation by the Runge‐Kutta method, the propagation properties of the polarization states and gains of the signal and pump lights were investigated. When the fiber was not twisted, the propagation property depended on the polarization state of incident light. However, except when the incident light was in a special polarization state, the signal light generally came close to linearly polarized light in the direction of the major axis of the elliptically polarized incident pump light. The difference between the signal optical gains of linear and circular polarization was 3 dB at most. When the twist rate in a fiber was over 1 turn/m, the signal light polarization state was almost unchanged during propagation and the optical gain was stable for various polarization states of the incident pump light.

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Active transmission line: light amplification by backward-stimulated Raman scattering in polarization-maintaining optical fiber

Cited by 44 publications

References 16 publications

Glass and Rare‐Earth Elements: A Personal Perspective

Glass and Rare‐Earth Elements: A Personal Perspective

Influence of fluorescent dye on the linear polarization direction of stimulated Raman Stokes scattering in liquid‐core optical fibers

Polarization state and gain of lights interacting through stimulated Raman scattering in single‐mode optical fibers

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