Fabrication of high-efficiency pump and signal combiner based on a thermally expanded core technique

Zhao, Ke; Chang, Xinzu; Chen, Zilun; Wang, Zefeng; Jiang, Houman

doi:10.1016/j.optlastec.2015.06.009

Cited by 16 publications

(6 citation statements)

References 23 publications

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“…(6 + 1) × 1 power combiners utilizing single mode input signal fibers, 105/125 µm pump fibers and a 25/250 µm DC fiber at the output are presented in papers [16,66]. In paper [66] a conventional SMF28e fiber is used as a feed-through fiber and the signal transmission efficiency was improved from 51% to 94% thanks to the TEC technique. In a paper [16], the authors reported a signal and pump power transmission efficiency of 94%.…”

Section: Pump and Signal Power Combinersmentioning

confidence: 99%

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High-Power Passive Fiber Components for All-Fiber Lasers and Amplifiers Application—Design and Fabrication

Stachowiak

2018

Photonics

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The most important components for application in high-power all-fiber lasers and amplifiers are, most of all, power combiners, but also mode field adaptors. This paper summarizes recent achievements in the area of development and fabrication of high-power passive fiber components. The principles of operation and basic design and fabrication criteria, which have to be taken into account while designing the aforementioned components, are explained in detail. The most recent impressive achievements are summarized and described.

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Section: Pump and Signal Power Combinersmentioning

confidence: 99%

“…Summary of recently reported pump and signal power combiners[16,[64][65][66][67][68][69][70][71][72].…”

mentioning

confidence: 99%

High-Power Passive Fiber Components for All-Fiber Lasers and Amplifiers Application—Design and Fabrication

Stachowiak

2018

Photonics

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“…Construction with bulk optics [7] LMA The most important components of all-fiber construction techniques of high-power sources are mode field adaptors (MFAs) and fiber power combiners [20][21][22][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. MFAs enable signal transmission between two fibers with different mode-field diameters.…”

Section: Ref Gain Medium Output Power Pump Power Slope Efficiency Symentioning

confidence: 99%

“…A splice between non-matched fibers can cause leaking of high power radiation, leading to point overheating and even damaging the fiber and the setup. It is often a problem to match commercial components to the fibers used in the experimental setup, which is still under investigation by many research teams [20][21][22][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. It is important to achieve a low transmission loss of the pump radiation, but most of all, it is essential to achieve a very low transmission loss of the signal radiation, which is more expensive than pump radiation (according to price per W).…”

Section: Ref Gain Medium Output Power Pump Power Slope Efficiency Symentioning

confidence: 99%

“…It is very difficult to achieve high transmission of the signal in the case of (N + 1) × 1 configuration, especially when high taper ratio (TR) is needed [31,36]. Thus, research teams applied thermally expanded core (TEC) techniques [29], internal MFAs [30], or by using a fiber with a clad with a reduced diameter to decrease the required TR [36].…”

Section: Ref Gain Medium Output Power Pump Power Slope Efficiency Symentioning

confidence: 99%

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40 W All-Fiber Er/Yb MOPA System Using Self-Fabricated High-Power Passive Fiber Components

2018

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Abstract:In this work, we demonstrate a three-stage all-fiber master oscillator power amplifier (MOPA) system emitting over 40 W of continuous-wave (CW) output power at~1.5 µm. The setup utilizes three self-fabricated high-power passive fiber components: a mode-field adaptor (MFA) and two types of pump and signal power combiners. Their development allowed us to become independent from commercially available components, which are often incompatible with fibers used in the experimental setups, resulting in additional losses. A power combiner with single-mode (SM) signal fibers in a configuration (5 + 1) × 1 was used in the second stage of the MOPA system, which was based on an SM Er-Yb co-doped double-clad (DC) fiber. The fabricated MFA was used to connect the second amplifier stage based on SM fibers with the third amplifier stage based on large-mode-area (LMA) fibers. In the third stage of MOPA system, based on Er-Yb LMA DC fibers, we used the fabricated power combiner based on LMA-type signal fibers in a configuration (6 + 1) × 1. The presented three-stage MOPA system, utilizing self-fabricated high-power passive fiber components, enables amplification of an input signal of 10 mW up to 44 W of the CW power at the wavelengths of 1555 nm and 1563 nm, corresponding to a gain level of approximately 36.4 dB.

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High-efficiency (6 + 1) × 1 pump–signal combiner based on low-deformation and high-precision alignment fabrication

Zou

Chen

et al. 2017

Appl. Phys. B

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Fabrication of high-efficiency pump and signal combiner based on a thermally expanded core technique

Cited by 16 publications

References 23 publications

High-Power Passive Fiber Components for All-Fiber Lasers and Amplifiers Application—Design and Fabrication

High-Power Passive Fiber Components for All-Fiber Lasers and Amplifiers Application—Design and Fabrication

40 W All-Fiber Er/Yb MOPA System Using Self-Fabricated High-Power Passive Fiber Components

High-efficiency (6 + 1) × 1 pump–signal combiner based on low-deformation and high-precision alignment fabrication

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