250-GHz Passive Harmonic Mode-Locked Er-Doped Fiber Laser by Dissipative Four-Wave Mixing With Silicon-Based Micro-Ring

Jyu, Siao-Shan; Yang, Ling; Wong, Claudia; Yeh, Chien‐Hung; Chow, Chi‐Wai; Tsang, Hon Ki; Lai, Yinchieh

doi:10.1109/jphot.2013.2283243

Cited by 27 publications

(15 citation statements)

References 14 publications

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“…Furthermore, erbium-doped mode-locked ring fiber laser incorporating SOI MRR were also reported. The mode-locking mechanism was based either on a piece of highly nonlinear fiber [21] or via nonlinear broadening in the SOI MRR itself [22] and finally a phase modulator was added in the cavity to enhance the ER [23]. However, these hybrid laser prototypes were either only for single wavelength operation or with a fixed frequency spacing, and did not take advantage of the potential of light processing that the silicon photonics platform could offer.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Silicon-Fiber Tunable Multiwavelength Laser With Switchable Frequency Spacing

Vallée

Jean

Shi

2020

IEEE J. Select. Topics Quantum Electron.

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Agile optical systems and elastic optical networks demand for flexible, high-performance laser sources. We demonstrate a hybrid silicon-fiber laser that can be largely tuned in wavelength, switched in frequency spacing and easily switched between multi-and single-wavelength operations. Single-mode laser with a fiber-coupled output power of 6 to 8 dBm was measured across the spectral range of 1545 nm to 1560 nm. No significant sign of power limitation from nonlinear absorption or free carrier generation in silicon was found. It is thus expected that a higher output can be obtained by improving the gain saturation performances as well as the fiber-to-chip coupling efficiency. For multi-wavelength operation, we have achieved a frequency spacing switchable between 56 GHz, 75 GHz, and 225 GHz. For both the multi-and single-wavelength operations, a linewidth of less than 20 kHz was measured. All the tuning mechanisms have been realized on the silicon chip, providing a scalable solution for tunable fiber lasers with minimized cost and integration complexity.

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Section: Introductionmentioning

confidence: 99%

Hybrid Silicon-Fiber Tunable Multiwavelength Laser With Switchable Frequency Spacing

Vallée

Jean

Shi

2020

IEEE J. Select. Topics Quantum Electron.

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“…However, their pulse qualities are generally poor due to the additional satellite pulses, timing jitters, and chirped phases [23,24]. Fiber lasers having the advantages of low manufacturing and maintaining cost, excellent beam quality, and outstanding heat dissipation capability, have become excellent laser platforms for GHz repetition rate mode-locked laser sources with high reliability and good pulse quality [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…A fiber laser can be mode-locked either actively with an optical modulator or passively with a saturable absorber (SA), technique of nonlinear polarization evolution, or technique of four-wave-mixing [19][20][21][22]. Fundamental mode-locking of a fiber laser with an electro-optic modulator usually operates at MHz repetition rate constrained by the cavity length [18].…”

Section: Introductionmentioning

confidence: 99%

“…Fundamental mode-locking of a fiber laser with an electro-optic modulator usually operates at MHz repetition rate constrained by the cavity length [18]. Actively mode-locked pulses at GHz repetition rates can be achieved with harmonic modelocking of a fiber laser [19]. However, the pulse width of an actively mode-locked fiber laser is usually long and the pulses usually do not have constant energies and coherent mutual phases.…”

Section: Introductionmentioning

confidence: 99%

“…Most recently, a modelocked fiber laser operating at the 3436 th harmonic of the fundamental repetition rate was developed and pulses with a repetition rate of 14.5GHz were obtained [38]. Harmonic modelocked fiber lasers with tunable repetition rate at GHz ranges have also been achieved with four-wave mixing mechanism and different frequency multiplication techniques [19][20][21][22]. However, harmonic mode-locking of a fiber laser is usually much less stable than fundamental mode-locking and is also harder to control for practical applications [39].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical investigation of GHz repetition rate fundamentally mode-locked all-fiber lasers

Ma¹,

Zhu²,

Yang³

et al. 2019

Opt. Express

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GHz repetition rate fundamentally mode-locked lasers have attracted great interest for a variety of scientific and practical applications. A passively mode-locked laser in all-fiber format has the advantages of high stability, maintenance-free operation, super compactness, and reliability. In this paper, we present numerical investigation on passive mode-locking of all-fiber lasers operating at repetition rates of 1-20 GHz. Our calculations show that the reflectivity of the output coupler, the small signal gain of the doped fiber, the total net cavity dispersion, and the modulation depth of the saturable absorber are the key parameters for producing stable fundamentally mode-locked pulses at GHz repetition rates in very short allfiber linear cavities. The instabilities of GHz repetition rate fundamentally mode-locked allfiber lasers with different parameters were calculated and analyzed. Compared to a regular MHz repetition rate mode-locked all-fiber laser, the pump power range for the mode-locking of a GHz repetition rate all-fiber laser is much larger due to the several orders of magnitude lower accumulated nonlinearity in the fiber cavity. The presented numerical study provides valuable guidance for the design and development of highly stable mode-locked all-fiber lasers operating at GHz repetition rates.

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Revealing the Buildup Dynamics of Harmonic Mode‐Locking States in Ultrafast Lasers

Liu

Pang

2019

Laser & Photonics Reviews

220

101

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Harmonic mode‐locking (HML) is an important technique enabling the generation of high‐repetition‐rate ultrashort pulses. Using an emerging time‐stretch dispersive Fourier transform technique, the experimental observation of the entire buildup process of the passive HML state in an ultrafast fiber laser is reported here. It is unveiled that the whole process of HML buildup successively undergoes seven different ultrafast phases: raised relaxation oscillation, spectral beating behavior, birth of a giant pulse, self‐phase‐modulation‐induced instability, pulse splitting, repulsion and separation of multiple pulses, and a stable HML state. It is observed that the multiple HML pulses originate from a single‐pulse splitting phenomenon and a remarkable breathing behavior occurs at an early stage of the HML buildup process. The numerical results confirm that the effects of dispersive wave, gain depletion and recovery, and acoustic wave play key roles in the earlier, middle, and later stages of this HML buildup process, respectively; as well, the acoustic resonance in the single‐mode fiber stabilizes the final HML state of lasers.

show abstract

250-GHz Passive Harmonic Mode-Locked Er-Doped Fiber Laser by Dissipative Four-Wave Mixing With Silicon-Based Micro-Ring

Cited by 27 publications

References 14 publications

Hybrid Silicon-Fiber Tunable Multiwavelength Laser With Switchable Frequency Spacing

Hybrid Silicon-Fiber Tunable Multiwavelength Laser With Switchable Frequency Spacing

Numerical investigation of GHz repetition rate fundamentally mode-locked all-fiber lasers

Revealing the Buildup Dynamics of Harmonic Mode‐Locking States in Ultrafast Lasers

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