Theoretical study on instantaneous linewidth of Fourier-domain mode-locked fiber lasers

Tu, Chenghou; Deng, Yixin; Cai, Meng-Qiang; Huang, Zu‐En; Li, Yongnan; Lu, Fuyun; Li, Enbang

doi:10.1016/j.optcom.2012.06.072

Cited by 5 publications

(6 citation statements)

References 16 publications

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“…The matrices M FRM , M L,n and M NL,n defined in Eqs. (11), (17) and (20), as well as the matrix representing the polarization controller M PC given by Eq. (13), are all of the form Eq.…”

Section: Numerical Implementationmentioning

confidence: 99%

“…x − u 2 y , which is introduced by the M NL,n defined in Eq. (20), must be considered. This can be done by precomputing M FS at each Ω (t m ) for different values u 2…”

Section: A Evaluation Of the Fiber Nonlinearitymentioning

confidence: 99%

“…x,y for M NL,n in Eq. (20) can be expressed as |u x | = Au x (0) + Bu y (0) , u y = −B * u x (0) + A * u y (0) , where we have dropped the t dependence for notational convenience. Writing u x (0) = P 1/2 exp (iρ x ) cos δ, u y (0) = P 1/2 exp iρ y sin δ with the optical power P, phases ρ x,y and polarization angle δ, we express the phase term in Eq.…”

Section: A Evaluation Of the Fiber Nonlinearitymentioning

confidence: 99%

“…Writing u x (0) = P 1/2 exp (iρ x ) cos δ, u y (0) = P 1/2 exp iρ y sin δ with the optical power P, phases ρ x,y and polarization angle δ, we express the phase term in Eq. (20) as…”

Section: A Evaluation Of the Fiber Nonlinearitymentioning

confidence: 99%

“…If no polarization maintaining (PM) optical components such as special PM fiber are used, polarization effects greatly influence the FDML operating characteristics due to effects such as cross-phase modulation, bending birefringence and polarization-mode dispersion (PMD) in the fiber spool [16,17]. Theoretical models for FDML lasers typically do not take into account the polarization degree of freedom of the optical field [2,[18][19][20][21], and are thus only suitable for PM FDML setups. In this case, polarization is controlled by using PM optical fiber and other components along with spliced fiber connections to ensure accurate orientation of the optical axes [16].…”

Section: Introductionmentioning

confidence: 99%

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Efficient simulation of the swept-waveform polarization dynamics in fiber spools and Fourier domain mode-locked (FDML) lasers

Jirauschek

Huber

2017

J. Opt. Soc. Am. B

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We present a theoretical model and its efficient numerical implementation for the simulation of wavelength-swept waveform propagation in fiber systems such as Fourier domain mode-locked (FDML) lasers, fully accounting for the polarization dynamics in fiber spools and further polarization dependent optical components in the setup. This approach enables us to perform long-time simulations of the FDML laser dynamics over more than 100000 cavity roundtrips, as required for some FDML configurations to ensure convergence to the steady state operating regime. The model is validated against experimental results for single propagation through a fiber spool and for stationary FDML operation. The polarization dynamics due to the fiber spool, inducing polarization-mode dispersion, bending birefringence as well as cross-phase modulation, and other optical components such as the Faraday-rotating mirror used for polarization compensation is thoroughly investigated.

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“…The matrices M FRM , M L,n and M NL,n defined in Eqs. (11), (17) and (20), as well as the matrix representing the polarization controller M PC given by Eq. (13), are all of the form Eq.…”

Section: Numerical Implementationmentioning

confidence: 99%

“…x − u 2 y , which is introduced by the M NL,n defined in Eq. (20), must be considered. This can be done by precomputing M FS at each Ω (t m ) for different values u 2…”

Section: A Evaluation Of the Fiber Nonlinearitymentioning

confidence: 99%

Section: A Evaluation Of the Fiber Nonlinearitymentioning

confidence: 99%

“…Writing u x (0) = P 1/2 exp (iρ x ) cos δ, u y (0) = P 1/2 exp iρ y sin δ with the optical power P, phases ρ x,y and polarization angle δ, we express the phase term in Eq. (20) as…”

Section: A Evaluation Of the Fiber Nonlinearitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Efficient simulation of the swept-waveform polarization dynamics in fiber spools and Fourier domain mode-locked (FDML) lasers

Jirauschek

Huber

2017

J. Opt. Soc. Am. B

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Dual-comb based time-stretch optical coherence tomography for large and segmental imaging depth

Zhang

Wang

et al. 2022

Opt. Express

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Optical coherence tomography based on time-stretch enables high frame rate and high-resolution imaging for the inertia-free wavelength-swept mechanism. The fundamental obstacle is still the acquisition bandwidth's restriction on imaging depth. By introducing dual-comb with slightly different repetition rates, the induced Vernier effect is found to be capable of relieving the problem. In our work, a dual-comb based time-stretch optical coherence tomography is proposed and experimentally demonstrated, achieving a 1.5-m imaging depth and 200-kHz A-scan rate. Moreover, about a 33.4-µm resolution and 25-µm accuracy are achieved. In addition, by adjusting the frequency detuning of the dual-comb, the A-scan rate can be further boosted to video-rate imaging. With enlarged imaging depth, this scheme is promising for a wide range of applications, including light detection and ranging.

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Modeling and analysis of polarization effects in Fourier domain mode-locked lasers

Jirauschek

Huber

2015

Opt. Lett.

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We develop a theoretical model for Fourier domain mode-locked (FDML) lasers in a non-polarization-maintaining configuration, which is the most widely used type of FDML source. This theoretical approach is applied to analyze a widely wavelength-swept FDML setup, as used for picosecond pulse generation by temporal compression of the sweeps. We demonstrate that good agreement between simulation and experiment can only be obtained by including polarization effects due to fiber bending birefringence, polarization mode dispersion, and cross-phase modulation into the theoretical model. Notably, the polarization dynamics are shown to have a beneficial effect on the instantaneous linewidth, resulting in improved coherence and thus compressibility of the wavelength-swept FDML output.

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Theoretical study on instantaneous linewidth of Fourier-domain mode-locked fiber lasers

Cited by 5 publications

References 16 publications

Efficient simulation of the swept-waveform polarization dynamics in fiber spools and Fourier domain mode-locked (FDML) lasers

Efficient simulation of the swept-waveform polarization dynamics in fiber spools and Fourier domain mode-locked (FDML) lasers

Dual-comb based time-stretch optical coherence tomography for large and segmental imaging depth

Modeling and analysis of polarization effects in Fourier domain mode-locked lasers

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