CW operation of semiconductor ring lasers

Krauss, Thomas F.; Laybourn, P.J.R.; Roberts, J.S.

doi:10.1049/el:19901349

Cited by 101 publications

(34 citation statements)

References 8 publications

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“…where IMP (2) is the second-order intermodulation product power, and IMP (3) is the thirdorder intermodulation product power. Therefore, the CNR of our designed CATV optical link can be derived as…”

Section: Theoretical Modelmentioning

confidence: 99%

“…In recent years optical fiber couplers, such as 2 × 2 and 3 × 3 optical single-mode fiber couplers, with ring or loop configurations have attracted much attention [1][2][3][4][5]. The fiber ring laser using an erbium-doped-fiber amplifier (EDFA) can be designed as a multimode, single-mode, or pulsed operation [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Multiple-Output Fiber-Ring Lasers and Amplifiers in a Hybrid CATV and ADSL Broadcasting Optical Fiber Communication System

Lin

Kuo

2003

Fiber and Integrated Optics

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In this article we propose two kinds of new fiber ring structure with a semiconductor optical amplifier. The first structure is a one-fiber-ring amplifier with an 8 × 8 fiber coupler and a semiconductor optical amplifier (SOA). The second fiber ring structure is a two-fiber-ring laser including an 8 × 8 fiber coupler, a 2 × 2 E/O modulator, and an SOA. The 14-output spectra of the fiber laser are measured. The gain coefficients of each port of the multiple-output-fiber-ring amplifiers are also measured. We apply these two kinds of fiber ring structures in a hybrid CATV and ADSL broadcasting optical fiber communication system. This application can develop a broadcasting system with large coverage area without using many laser diodes and optical amplifiers. The performance of such a system is also analyzed in this article.

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Section: Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multiple-Output Fiber-Ring Lasers and Amplifiers in a Hybrid CATV and ADSL Broadcasting Optical Fiber Communication System

Lin

Kuo

2003

Fiber and Integrated Optics

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“…Since WGMs are confined to the sidewalls of the circular cavity, the inner region of a micropillar or micropost structure is not vital to sustain those lasing modes. It can thus be removed or omitted in order to reduce threshold current [9,10], and background radiation from spontaneous emission.…”

Section: Introductionmentioning

confidence: 99%

Mode selection in electrically driven quantum dot microring cavities

et al. 2013

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Within this paper a novel method for selecting certain lasing modes from a whispering gallery mode (WGM) spectrum of electrically pumped microrings is presented. Selection is achieved by introducing subwavelength sized notches of about 50nm width and 500nm depth to the sidewalls of ring shaped quantum dot micro cavities with 80µm diameter and ridge widths below 2µm. It is shown that the notches act as scattering centers, suppressing modes that have maxima in intensity at the notch position. By a variation of the angle between the notches, different repetitive patterns of lasing modes and suppressed modes are conceivable.

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“…Semiconductor ring lasers (SRLs) are attractive devices because they can be fabricated without the need for cleaved facet mirrors [1][2][3] , offering the possibility to be monolithically integrated with other optoelectronic devices. SRLs can support two counter propagating lasing modes, that give rise to a rich phenomenology of operating regimes and dynamics.…”

Section: Introductionmentioning

confidence: 99%

Linewidth of monolithic semiconductor ring lasers

Giuliani

Scire²,

Sorel

et al. 2006

SPIE Proceedings

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In this work we numerically calculate the linewidth of a single-mode monolithic Semiconductor Ring Laser (SRL) operating in the unidirectional regime. A new expression for the SRL linewidth is derived from the conventional Henry's formula, and the importance of different physical parameters is discussed. In particular, the linewidth is mainly determined by the SRL diameter, because the waveguide bending loss have a very strong dependence on the diameter. We show that circular SRLs with diameter smaller than 180 µm are unlikely to be operated CW. As a general rule, the linewidth decreases for increasing SRL diameter, and it varies from 15 MHz for 200 µm diameter down to 1 MHz for 2000 µm diameter.

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CW operation of semiconductor ring lasers

Cited by 101 publications

References 8 publications

Multiple-Output Fiber-Ring Lasers and Amplifiers in a Hybrid CATV and ADSL Broadcasting Optical Fiber Communication System

Multiple-Output Fiber-Ring Lasers and Amplifiers in a Hybrid CATV and ADSL Broadcasting Optical Fiber Communication System

Mode selection in electrically driven quantum dot microring cavities

Linewidth of monolithic semiconductor ring lasers

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