Recent progress on S-band fiber amplifiers

Caspary, Reinhard; Unrau, U.; Kowalsky, Wolfgang

doi:10.1109/icton.2003.1264623

Cited by 12 publications

(8 citation statements)

References 30 publications

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“…Figure 5(a) shows the optical spectrum of the dual-wavelength output, taken at a pump power of 121.7 mW, with peak wavelengths at 1473.6 and 1479.3 nm giving a spacing of about 5.7 nm. This wavelength range covers the S+/S band region, which is crucial in extending the S-band so as to achieve a higher capacity [40,41]. In this work, the TFF is characterized and found to have a much wider range, stretching from 1440-1530 nm.…”

Section: Resultsmentioning

confidence: 94%

“…The use of thulium-fluoride fibers (TFFs) as a gain medium has a better potential for addressing this problem. The TFF has a large operational bandwidth stretching from 1440 to 1500 nm that eventually covers the S and S + bands, as reported in [40,41]. The approach on PCF as a medium for generating a dual-wavelength laser has already been demonstrated by Sierra-Hernandes et al [42] at a wavelength range of 1530-1556 nm as well as Ahmad et al [3] in the C-band region using a conventional erbium-doped fiber.…”

Section: Laser Physicsmentioning

confidence: 81%

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Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS₂) as a saturable absorber

Ahmad¹,

Reduan²,

Safaei³

2017

Laser Phys.

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In this work a Q-switched, dual-wavelength fiber laser is proposed and demonstrated for S+/S band operation. The proposed laser combines a 14.5 m long thulium-fluoride fiber with an absorption rate of 0.15 dB m −1 at a wavelength of 1400 nm with a 0.5 cm-long photonics crystal fiber to generate the desired dual-wavelength output in the S + /S band region. The generated output is then Q-switched using a compact MoS 2 -based saturable absorber. A dualwavelength output with lasing wavelengths at 1473.6 and 1479.3 nm is obtained. The pulses have a repetition rate and pulse width of approximately 15.9 kHz and 4.1 µs at a maximum pump power of 126.4 mW, as well as a maximum average output power and pulse energy of 1.3 mW and 83.7 nJ at the same pump power. The generated pulses have a 3 dB bandwidth of 4.7 µs, along with a signal-to-noise ratio of 32.0 dB. The proposed laser is able to transmit within the S-band transmission region or shorter, thus making it highly viable for a multitude of photonics applications.

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Section: Resultsmentioning

confidence: 94%

Section: Laser Physicsmentioning

confidence: 81%

Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS₂) as a saturable absorber

Ahmad¹,

Reduan²,

Safaei³

2017

Laser Phys.

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“…Interest in pulsed lasers has come about after the intense development of optical amplifiers covering the wavelength range of S-L bands [1][2][3] as well as the generation of single [4,5] and multiwavelength [6][7][8][9][10] fiber laser sources,. Generally, pulsed lasers can be categorized as Q-switching [11] or mode-locking low cost, and wide ambient atmospheric stability [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Generation of mode-locked thulium/holmium-doped fiber laser assisted by bismuthene/side polished fiber as saturable absorber

Ahmad¹,

Azali²,

Bayang³

et al. 2022

Laser Phys. Lett.

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An all-fiber passively mode-locked laser is demonstrated near the 2.0 µm wavelength region utilizing thulium/holmium-doped fiber as the gain medium and bismuthene/side-polished fiber (SPF) as saturable absorber (SA). The effect of bismuthene concentration on the performance of the generated mode-locked lasers has also been investigated. In this work, bismuthene was obtained by the exfoliation of bismuth under the ultrasonication technique. Two different concentrations of bismuthene (10 and 20 mg ml−1) were prepared to coat the SPF and be further used as SA. Based on the experimental results, the SA with 10 mg ml−1 concentration of bismuthene induced the most stable mode-locked pulses with good performance. The 10 mg ml−1 bismuthene/SPF SA produced pulses at the center wavelength of 1932.69 nm with the 3 dB bandwidth of 2.59 nm and a signal-to-noise ratio value of 63 dB. The generated pulsed laser exhibits pulse energy of 421.3 pJ, peak power of 261.4 W, and average output power of 4.613 mW. Overall, this work reveals the potential of bismuthene/SPF as an SA for generating mode-locked laser pulses, which is useful in photonics applications.

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“…Due to the tremendous increase in communication traffic in recent years, more and more efforts in research have been directed towards developing highly efficient broad-band fiber amplifiers that will fully exploit the low-loss band of silica fibers at the 1450-1630 nm range, which has a loss of only 0.25 dB/km in order to increase the transmission capacity of wavelength-division multiplexing (WDM) networks [1,2]. These broad-band amplifiers must be able to amplify the new short wavelength band (S-band) in addition to the existing Cand L-bands.…”

Section: Introductionmentioning

confidence: 99%

OPTIMIZATION OF THE 1050nm PUMP POWER AND FIBER LENGTH IN SINGLE-PASS AND DOUBLE-PASS THULIUM DOPED FIBER AMPLIFIERS

Emami¹,

Harun²,

Rahman³

et al. 2009

PIER B

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Abstract-The pump power and thulium-doped fiber (TDF) length for both single-pass and double-pass Thulium-Doped Fiber Amplifiers (TDFA) are theoretically optimized by solving differential equations. The 1050 nm pump is used to provide both ground-state and excitedstate absorptions for amplification in the S-band region. The TDFA is saturated at a shorter length with a higher gain value as the operating pump power increases. The double-pass TDFA allows double propagation of the test signal in the gain medium, which increases the effective TDF length and thus improves the gain of the TDFA

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Recent progress on S-band fiber amplifiers

Cited by 12 publications

References 30 publications

Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS₂) as a saturable absorber

Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS₂) as a saturable absorber

Generation of mode-locked thulium/holmium-doped fiber laser assisted by bismuthene/side polished fiber as saturable absorber

OPTIMIZATION OF THE 1050nm PUMP POWER AND FIBER LENGTH IN SINGLE-PASS AND DOUBLE-PASS THULIUM DOPED FIBER AMPLIFIERS

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Recent progress on S-band fiber amplifiers

Cited by 12 publications

References 30 publications

Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS2) as a saturable absorber

Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS2) as a saturable absorber

Generation of mode-locked thulium/holmium-doped fiber laser assisted by bismuthene/side polished fiber as saturable absorber

OPTIMIZATION OF THE 1050nm PUMP POWER AND FIBER LENGTH IN SINGLE-PASS AND DOUBLE-PASS THULIUM DOPED FIBER AMPLIFIERS

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Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS₂) as a saturable absorber

Dual-wavelength Q-switched thulium-fluoride fiber laser for S+/S band using molybdenum disulfide (MoS₂) as a saturable absorber