Transmission line description of optical feedback and injection locking for Fabry-Perot and DFB lasers

Tromborg, B.; Olesen, H.; Xing, Peng; Saito, Shoichiro

doi:10.1109/jqe.1987.1073251

Cited by 155 publications

(73 citation statements)

References 33 publications

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“…In both cases, the feedback fraction is given by 7-3. The theoretical analysis of the system is based on a single-mode transmission-line description which is an extension of [20]. In this paper, only relatively weak feedback fractions (~3 5 0.3) from the extemal cavity are considered, so that multiple reflections in the extemal cavity can be neglected.…”

Section: Dfb-lasermentioning

confidence: 99%

“…where Normally, the boundary condition related to the right facet is described by the use of an effective right-facet reflection coefficient [20]. However, this is not possible in the case of external PCF.…”

Section: Dfb-lasermentioning

confidence: 99%

“…The dependency on the noise reduction bandwidth is illustrated by varying the bias and thereby the relaxation frequency. The phase variance, which is the integral of the phase fluctuation spectrum, is a measure of the total phase noise and is as low as 0.0017 rad2 and 0.0003 rad2 in the entire offset band of 20 GHz for the bias current of two and five times the threshold, respectively. In the power spectral domain, the consequence of this self-phase-locking is a drastic line narrowing.…”

Section: Frequency Fluctuation Spectramentioning

confidence: 99%

“…Linearizing A-(t) and A f ( t ) around the stationary solutions and transforming to the s-domain, the boundary condition becomes (26) The linearized field equation in the s-domain is found from [20]: SA-(s) = rzSA+(s) + r~( 1 -r g ) S A + * ( -~) e -~~.…”

Section: Appendix a Lasers With External Phase Conjugate Feedbackmentioning

confidence: 99%

“…Equation (11) is still valid for external PCF, since the derivation of the expression is only based on the connection between the amount of photons in the laser cavity and the electric field at the first mirror [20]. The linearization of (1 1) gives the following two relations [20]:…”

Section: F ( S )mentioning

confidence: 99%

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Phase noise reduction by self-phase locking in semiconductor lasers using phase conjugate feedback

Petersen

Gliese

Nielsen

1994

IEEE J. Quantum Electron.

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Abstruct-A theoretical analysis of the behavior of the frequency/phase noise of semiconductor lasers with external phase conjugate feedback is presented. It is shown that the frequency noise is drastically reduced even for lasers with butt-coupled phase conjugate mirrors. In this laser system, the phase noise takes a finite-low value corresponding to a state of first-order self-phase locking of the laser. As a result, the spectral shape of the laser signal does not remain Lorentzian but collapses around the carrier to a delta function with a close to carrier noise level of less than -137 dBcMz. The total phase variance of this laser signal, in a 20 GHz noise bandwidth, is less than 0.002 rad'.

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Section: Dfb-lasermentioning

confidence: 99%

Section: Dfb-lasermentioning

confidence: 99%

Section: Frequency Fluctuation Spectramentioning

confidence: 99%

Section: Appendix a Lasers With External Phase Conjugate Feedbackmentioning

confidence: 99%

Section: F ( S )mentioning

confidence: 99%

See 3 more Smart Citations

Phase noise reduction by self-phase locking in semiconductor lasers using phase conjugate feedback

Petersen

Gliese

Nielsen

1994

IEEE J. Quantum Electron.

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Physics and Applications of High‐β Micro‐ and Nanolasers

Deng

Lippi

Mørk

et al. 2021

Advanced Optical Materials

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Theory of Self‐pulsing in Photonic Crystal Fano Lasers

Rasmussen

Mørk

2017

Laser & Photonics Reviews

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Laser self‐pulsing was a phenomenon exclusive to macroscopic lasers until recently, where self‐starting laser pulsation in a microscopic photonic crystal Fano laser was reported. In this paper a theoretical model is developed to describe the Fano laser, including descriptions of the highly‐dispersive Fano mirror, the laser frequency and the threshold gain. The model is based upon a combination of conventional laser rate equations and coupled‐mode theory. The dynamical model is used to demonstrate how the laser has two regimes of operation, continuous‐wave output and self‐pulsing, and these regimes are characterised using phase diagrams, establishing the regime of self‐pulsing numerically. Furthermore, the physics behind the self‐pulsing mechanism are explained in detail and it is demonstrated how cavity absorption makes the Fano mirror function as a saturable absorber, leading to Q‐switched pulse generation. A stability analysis is used to demonstrate how the dominant mechanism of instability is relaxation oscillations becoming un‐damped. Finally the effect of varying key self‐pulsing parameters is investigated by characterisation of the change in self‐pulsing regions.

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Transmission line description of optical feedback and injection locking for Fabry-Perot and DFB lasers

Cited by 155 publications

References 33 publications

Phase noise reduction by self-phase locking in semiconductor lasers using phase conjugate feedback

Phase noise reduction by self-phase locking in semiconductor lasers using phase conjugate feedback

Physics and Applications of High‐β Micro‐ and Nanolasers

Theory of Self‐pulsing in Photonic Crystal Fano Lasers

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