Direct optical phase modulation in semiconductor laser amplifier

Mellis, J.

doi:10.1049/el:19890460

Cited by 16 publications

(5 citation statements)

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“…where n is the refractive index of the active layer, dn/dN is the refractive-index shift coefficient, L is the length of the active region of the SOA, and ∆N (t) is the carrier density variation that is a function of the pump current change ∆I(t). It can be expressed by using an empirical value of dN/dI = 8 × 10 16 cm −3 mA −1 [13]…”

Section: Principle Of Operationmentioning

confidence: 99%

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Investigation of room-temperature multiwavelength fiber-ring laser that incorporates an SOA-based phase modulator in the laser cavity

Yao

Deng

et al. 2005

J. Lightwave Technol.

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A theoretical and experimental study of a multiwavelength fiber-ring laser that incorporates a semiconductor optical amplifier (SOA) in the laser cavity as a phase modulator to suppress the homogeneous line broadening is presented. The analysis reveals that the phase shift introduced by the SOA-based phase modulator is more significant than that formed using a LiNbO 3 phase modulator, which leads to a better suppression of the homogeneous line broadening. Multiwavelength lasing with small wavelength spacing and improved stability at room temperature is achieved. A fiber-ring laser based on the proposed approach is implemented. Stable multiwavelength operation with up to 26 wavelengths and wavelength spacing as small as 0.19 nm at room temperature is demonstrated.Index Terms-Erbium-doped fiber (EDF), fiber laser, homogeneous line broadening, multiwavelength, phase modulation, semiconductor optical amplifier (SOA).

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Section: Principle Of Operationmentioning

confidence: 99%

“…Taking the typical values dn/dN = −2 × 10 −20 cm 3 , L = 500 µm, and dN/dI = 8 × 10 16 cm −3 mA −1 [13] from (6) and (7), the phase change at 1550 nm that resulted from the external modulation is approximated to be…”

Section: Principle Of Operationmentioning

confidence: 99%

Investigation of room-temperature multiwavelength fiber-ring laser that incorporates an SOA-based phase modulator in the laser cavity

Yao

Deng

et al. 2005

J. Lightwave Technol.

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“…Therefore, it is necessary to look for other solutions to meet the requirements of the future alloptical signal processing. Traveling wave semiconductor laser amplifier used as optical phase modulator has been reported when its injection current is electrically modulated [5], [6].…”

Section: Introductionmentioning

confidence: 99%

All-optical phase modulation in a traveling wave semiconductor laser amplifier

Hui

Jiang

Kavehrad

et al. 1994

IEEE Photon. Technol. Lett.

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“…It has been shown [1][2][3][4][5][6] that an injection locked semiconductor laser amplifier can be used as an optical phase modulator in coherent transmission systems. As a consequence of the intrinsic properties of the semiconductor material, modulation of the laser amplifier bias current will yield both amplitude modulation (AM) and phase modulation (PM) of the optical output signal.…”

Section: Introductionmentioning

confidence: 99%

Two-section Semiconductor Laser Amplifier used as Phase Modulator in a DPSK Heterodyne System

Ligne¹,

Gleau²,

Hoa³

et al. 1994

Journal of Optical Communications

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This paper presents a two-section near traveling wave optical amplifier used as an external modulator accomplishing phase modulation. A DPSK heterodyne system has been simulated and the eye diagram has been obtained by numerical large-signal analysis at 0.5 and 2.5 Gbit/s. The analysis shows how it is possible to carry out high bit rate by adjustment of the ratio of the modulation currents of two sections. This device can have an important impact on broadband optical networks.

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Direct optical phase modulation in semiconductor laser amplifier

Cited by 16 publications

References 0 publications

Investigation of room-temperature multiwavelength fiber-ring laser that incorporates an SOA-based phase modulator in the laser cavity

Investigation of room-temperature multiwavelength fiber-ring laser that incorporates an SOA-based phase modulator in the laser cavity

All-optical phase modulation in a traveling wave semiconductor laser amplifier

Two-section Semiconductor Laser Amplifier used as Phase Modulator in a DPSK Heterodyne System

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