Period-one oscillation for photonic microwave transmission using an optically injected semiconductor laser

Chan, Sze-Chun; Hwang, Sheng-Kwang; Liu, Jia Ming

doi:10.1364/oe.15.014921

Cited by 200 publications

(109 citation statements)

References 38 publications

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“…An increment of the SBS threshold by 19 dB is achieved and is comparable to that reported using noisy external modulation [17]. Moreover, since chaotic oscillation is part of the inherent laser nonlinear dynamics [18][19][20][21], our approach requires no external modulators, dithering circuitries, or high-speed electronics. The optical spectrum generated from the chaotic single-mode laser is continuous, which leads to better bandwidth efficiency as compared to conventional PoF using multimode lasers [13].…”

Section: Introductionsupporting

confidence: 72%

“…When the injection is 23:6 mW in Fig. 2(f), the slave laser is finally stably locked by the master laser [20]. In the following, the chaotic state in Fig.…”

Section: Resultsmentioning

confidence: 90%

“…Light from the master laser is injected into the slave laser through a free-space optical circulator, which ensures unidirectional injection. The circulator is arranged such that the polarizations of the injection and the slave laser are the same, thereby minimizing the injection power required to generate chaos [20]. The master laser is biased at 133:4 mA and temperature stabilized at 18:00°C, while the slave laser is biased at 40:0 mA and temperature stabilized at 27:00°C.…”

Section: Introductionmentioning

confidence: 99%

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Broadband optical chaos for stimulated Brillouin scattering suppression in power over fiber

Chan

Liu

et al. 2011

Appl. Opt.

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Broadband chaos generated in an optically injected semiconductor laser is applied for power-over-fiber transmission. By varying the injection power, period-one oscillation, period-two oscillation, and chaotic oscillation are observed in the injected slave laser, indicating a period-doubling route to chaos. Compared to the free-running output of the laser, its chaotic output has a drastically increased signal bandwidth, which leads to a 19 dB increase of the stimulated Brillouin scattering threshold. Using a chaos of 5:2 GHz bandwidth, a maximum optical power of 27 dBm is obtained after 20 km transmission over fiber, which is applicable to optically powering some advanced communication networks. The approach uses the inherent nonlinear laser dynamics, which requires no modulation electronics or microwave signal sources.

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Section: Introductionsupporting

confidence: 72%

“…When the injection is 23:6 mW in Fig. 2(f), the slave laser is finally stably locked by the master laser [20]. In the following, the chaotic state in Fig.…”

Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Broadband optical chaos for stimulated Brillouin scattering suppression in power over fiber

Chan

Liu

et al. 2011

Appl. Opt.

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“…The larger sideband frequencies were observed by shifting the central frequency of the reference laser sweep away from the rubidium resonances whilst measuring the frequency on a wavemeter. The sideband to carrier intensity ratio also depends on the injection parameters and a suitable combination of k and f i which produces a desired ratio can be found [6].…”

mentioning

confidence: 99%

“…The sideband intensity and frequency can be tuned independently by simultaneous adjustment of f i and k using the maps in [6,11] as a guide. The region in the (f i , k) plane which produces a near 1:1 ratio in our slave laser is within the frequency locking range.…”

mentioning

confidence: 99%

Microwave sidebands for atomic physics experiments by period one oscillation in optically injected diode lasers

Laidler

Eriksson

2011

EPL

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We show that nonlinear dynamics in diode lasers with optical injection leads to frequency tunable microwave sidebands which are suitable for atomic physics experiments. We demonstrate the applicability of the sidebands in an experiment where rubidium atoms are magneto-optically trapped with both the trap and the re-pump optical frequencies derived from one optically injected laser. We find linewidth narrowing in the optical spectrum of the injected laser at both the injection frequency and the sideband frequency. With strong optical injection which leads to frequency locking we find a complete linewidth transfer from the master to the slave. Further applications are discussed.High power and narrowband emission are typical prerequisites of continuous wave lasers. Applications in atomic physics such as laser cooling and trapping [1] often require two or more lasers with these qualities. Laser cooling of carefully selected molecules [2] is possible, but several lasers are necessary to close the transitions for efficient cooling. A cost-effective way to produce high power narrowband light is to injection lock a diode slave laser with high power but often poor spectral properties to a narrow linewidth master laser [3]. This technique utilises one of the many nonlinear dynamical states of a diode laser with external optical injection [4]. Recently, another dynamical state in the slave laser, the period one (P1) oscillation limit cycle of undamped relaxation oscillations, has received increasing attention [5][6][7]. Remarkably, the frequency of the P1 oscillation can far exceed the modulation bandwidth of free running diode lasers. As a consequence, optical injection can be used to produce fast modulations in the microwave range of the spectrum even at frequencies not typically covered by standard external modulators.In this letter we report on the general applicability of P1 oscillation dynamics to experiments in atomic physics. We show that by carefully controlling the injection we can produce tunable sidebands. We demonstrate the sideband stability by creating a magneto-optical trap (MOT) with light solely from the optically injected slave laser. We show that the frequencies needed for a MOT can be produced both with weak injection which does not lead to frequency locking of the slave and strong injection with frequency locking on the master laser frequency. We measure the optical spectrum of the slave laser with a heterodyne technique and find that the spectral features at both the injection frequency and at the sidebands frequency are narrower than the free running slave laser. In the frequency locked case we find a complete linewidth transfer from master to slave. The sidebands in the optically injected slave laser can extend to several tens of GHz [5]. We discuss applications of the sideband technique beyond laser cooling of alkalis.In an edge emitting diode laser typical values of the laser gain and cavity decay rates lead to relaxationoscillations in the population inversion and the intensity. The optical spec...

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Monolithically Integrated Multi‐section Semiconductor Lasers: Toward the Future of Integrated Microwave Photonics

Li,

2023

Optical Imaging and Sensing

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Period-one oscillation for photonic microwave transmission using an optically injected semiconductor laser

Cited by 200 publications

References 38 publications

Broadband optical chaos for stimulated Brillouin scattering suppression in power over fiber

Broadband optical chaos for stimulated Brillouin scattering suppression in power over fiber

Microwave sidebands for atomic physics experiments by period one oscillation in optically injected diode lasers

Monolithically Integrated Multi‐section Semiconductor Lasers: Toward the Future of Integrated Microwave Photonics

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