All-fiber optical isolator based on Faraday rotation in highly terbium-doped fiber

Sun, Lei; Jiang, Shibin; Zuegel, J. D.; Marciante, John R.

doi:10.1364/ol.35.000706

Cited by 36 publications

(37 citation statements)

References 8 publications

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“…If the source is the laser that was used in References [8,9,10,11,12,13,14], all of these wavetrains (W S1 , W S2 , W S3 , W S4 , and W SM ) at the detector would interfere and the situation would be very complicated. However, as an ASE source with a very short coherence length (~61.9 μm) is used here, we can make the optical path difference sufficiently small between W SM and W S2 (see Table 1), which means that the interference only occurs between W SM and W S2 , by optimizing the location of the electromagnet and lengths of the PM-PBF, IOC A’s pigtail, and IOC B’s pigtail.…”

Section: Measurement Principlementioning

confidence: 99%

“…Compared with the other methods in previous studies used to determine the Verdet constant [8,9,10,11,12,13,14], not a laser source but a broad-spectrum ASE source and the white-light interference technique is used here, so the measured Verdet constant is more accurate and can be applied to the analysis of the nonreciprocal error induced by the Faraday effect in a FOG. Meanwhile, the ASE source has a very short coherence length, so it can avoid unwanted interference between irrelevant secondary waves, which is very important to simplify the analysis and improve the measurement system performance.…”

Section: Measurement Principlementioning

confidence: 99%

“…H. Wen et al [12] reported the first measurement of the Verdet constant of a seven-cell non-PM PBF, 6.1 ± 0.3 mrad/T/m at 1545 nm, which is about 90 times less than that of standard single-mode fiber (Corning’s SMF-28). L. Sun et al [13,14] measured the effective Verdet constant of a 25 wt. % terbium-doped-core phosphate fiber and a 56 wt.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of the Verdet Constant of Polarization-Maintaining Air-Core Photonic Bandgap Fiber

Song

Wang

et al. 2017

Sensors

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Abstract:We propose a method based on the white-light interference technique for measuring the Verdet constant of a polarization-maintaining air-core photonic bandgap fiber (PM-PBF). The experimental results show that the Verdet constant of the PM-PBF is~3.3 mrad/T/m for the broadband light with a spectral width of~38 nm and a mean wavelength of~1550 nm, which is 124 times less than that of a conventional stress-induced birefringent fibers called PANDA fibers (~0.41 rad/T/m for the same broad-spectrum light). The results indicate that the nonreciprocal error induced by the Faraday effect in a fiber optic gyroscope (FOG) made of the PM-PBF is theoreticallỹ 25 times less than that of a conventional FOG made of the PANDA fiber when other conditions, such as the fiber twist, fiber coil area, and so on, are the same.

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Section: Measurement Principlementioning

confidence: 99%

Section: Measurement Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurement of the Verdet Constant of Polarization-Maintaining Air-Core Photonic Bandgap Fiber

Song

Wang

et al. 2017

Sensors

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“…These devices are based on 56 wt % terbium (Tb)-doped silicate fiber, and the fiber polarizers are made of Corning SP1060 single-polarization fiber [7]. Sun et al [7] demonstrated 17 dB optical isolation at 1,053 nm. This approach shows the potential for achieving compact, high-power isolators in the near future.…”

Section: Polarization-dependent Optical Isolatorsmentioning

confidence: 99%

Main Optical Components for Fiber Laser/Amplifier Design

Ter-Mikirtychev

2013

Springer Series in Optical Sciences

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The first reported theoretical analysis and prediction of laser action based on a semiconductor diode was published in 1959 in the USSR [1]. The first operation of a semiconductor laser (also called a ''diode laser'' or ''laser diode'') was reported in 1962 in the USA [2]. Semiconductor lasers play a very important role in the fiber laser field. Therefore, this section provides a detailed description of the physical processes that take place in these laser devices.Unlike isolated atoms and molecules (and even some laser optical centers in doped dielectrics), semiconductors demonstrate wide energy bands. These bands are separated by a bandgap (Fig. 9.1). Typical values of the bandgap of semiconductor materials for the most commonly used and commercially available diode lasers are on the order of a few electron volts. Under certain excitation conditions, such as injecting an electrical current, optical excitation, or heating, electrons from the valence band can move from the valence band to the conduction band after absorbing energy by an excitation process. As a result of this interband electron transition, a pair of charge carriers can be created (i.e., electrons in the conduction band and holes in the valence band), which is called an electron-hole pair. If an electron undergoes reverse transition (i.e., from the conduction band to the valence band), the process is called electron-hole recombination. The result of this interband recombination is usually an extraction of energy that was received during the excitation process.In equilibrium, electron-hole pairs can be created and recombined as a result of thermal diffusion and spontaneous emission of photons. Thermal equilibrium of electrons and holes, in this case, produces a certain concentration of electrons in the conduction band and holes in the valence band. Note that electrons are fermions (their spin equals 1/2) and thus follow so-called Fermi-Dirac statistics. Therefore, a probability of the electron occupying a certain level with energy E at V. Ter-Mikirtychev,

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“…3 An all-fiber optical isolator in the highly terbium-doped fiber 4 and an all-fiber polarization controller in the flint-glass fiber 5 were available. The agile control of optical networks by MO devices, such as the MO crystal polarization controller assisted modelocked fiber laser 1 and the magnetic tunable optical clock extraction in a fiber optical parametric oscillator, 2 has attracted considerable attention in the recent years.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field response of erbium-doped magneto-optic fiber Bragg grating

Wen

et al. 2012

Opt. Eng

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The spectrum shift of erbium-doped magneto-optic fiber Bragg grating (Er-MFBG) induced by external magnetic fields is, for the first time, directly measured by the method of the "direct edge detection," and then the effective Verdet constant of −12.42 rad∕ðT · mÞ is determined. The theoretical results are in agreement with the experimental data. Our analysis shows the transfer characteristics of the spectrum shift to the transmission power are dependent on the state of polarization and wavelength position of probe light for a given Er-MFBG.

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All-fiber optical isolator based on Faraday rotation in highly terbium-doped fiber

Cited by 36 publications

References 8 publications

Measurement of the Verdet Constant of Polarization-Maintaining Air-Core Photonic Bandgap Fiber

Measurement of the Verdet Constant of Polarization-Maintaining Air-Core Photonic Bandgap Fiber

Main Optical Components for Fiber Laser/Amplifier Design

Magnetic field response of erbium-doped magneto-optic fiber Bragg grating

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