Relative intensity noise and frequency noise of a compact Brillouin laser made of As_38Se_62 suspended-core chalcogenide fiber

Tow, Kenny Hey; Léguillon, Yohann; Besnard, Pascal; Brilland, Laurent; Troles, Johann; Toupin, Perrine; Méchin, David; Trégoat, Denis; Molin, S.

doi:10.1364/ol.37.001157

Cited by 40 publications

(38 citation statements)

References 18 publications

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“…A spectral characterization of the Brillouin Gain spectrum was also done using a heterodyne detection from which a Brillouin frequency shift ν B of 7.25 GHz and a Brillouin gain linewidth 2ν B of 17 MHz were measured. The values of g B , ν B and 2ν B are slightly different from the measured values for a suspended-core AsSe fiber [5]. This can be explained by the presence of germanium in the fiber composition [9].…”

Section: Brillouin Scattering In the Microstructured Geasse Chalcogencontrasting

confidence: 70%

“…Microstructured optical fibers (MOFs) offer the advantage of having reduced effective areas, thus ensuring a stronger light confinement inside the fiber core, which increases the nonlinearity compared to bulk fiber. Recently, both alternatives have been combined by using a suspended-core microstructured fiber made of chalcogenide glass to make a BFL [5]. A 3 meter long suspended-core AsSe chalcogenide fiber was used and a lower threshold of 22 mW was obtained.…”

Section: Introductionmentioning

confidence: 99%

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6 mW and 30 mW laser threshold for respectively 1st and 2nd Brillouin Stokes order in a Ge10As24Se68 chalcogenide fiber

Tow

Léguillon

Besnard

et al. 2012

European Conference and Exhibition on Optical Communication

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IntroductionAlthough stimulated Brillouin scattering (SBS) in optical fiber is a penalizing nonlinear effect in optical communication systems, it is possible to make good use of SBS in other applications such as in Brillouin fiber lasers (BFLs). These types of lasers have been attracting a lot of interests lately due to their extremely narrow linewidth [1] which make them perfect candidates for coherent laser sources. Silica-based optical fibers are often used for these applications. However, due to the relatively small Brillouin gain coefficient g B of 4×10−11 m/W in silica [2], optical fibers of several kilometers or pump power of several hundred milliwatts are required to reach Brillouin threshold. One approach to make low-power consuming and more compact devices based on SBS is to use a material with a higher Brillouin gain coefficient. Chalcogenide fibers are an attractive option to make BFLs because of their high Brillouin gain coefficient, which is about 150 times more than in standard silica fibers [3]. In 2006, a BFL made of 4.9 m long step-index As 2

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Section: Brillouin Scattering In the Microstructured Geasse Chalcogencontrasting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

6 mW and 30 mW laser threshold for respectively 1st and 2nd Brillouin Stokes order in a Ge10As24Se68 chalcogenide fiber

Tow

Léguillon

Besnard

et al. 2012

European Conference and Exhibition on Optical Communication

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“…For simplicity, the IQM can be replaced by a standard intensity modulator at the cost of slight degradation of control precision. The 25-km fibre can also be replaced by short fibre or waveguide with high Brillouin efficiency 55,56 . The feedback calibration is only needed for filter initialization and will not increase the control complexity.…”

Section: Discussionmentioning

confidence: 99%

Software-defined microwave photonic filter with high reconfigurable resolution

Wei

Jaouën

et al. 2017

Proceedings of the 7th International Multidisciplinary Conference on Optofluidics 2017

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Microwave photonic filters (MPFs) are of great interest in radio frequency systems since they provide prominent flexibility on microwave signal processing. Although filter reconfigurability and tunability have been demonstrated repeatedly, it is still difficult to control the filter shape with very high precision. Thus the MPF application is basically limited to signal selection. Here we present a polarizationinsensitive single-passband arbitrary-shaped MPF with ~GHz bandwidth based on stimulated Brillouin scattering (SBS) in optical fibre. For the first time the filter shape, bandwidth and central frequency can all be precisely defined by software with ~MHz resolution. The unprecedented multi-dimensional filter flexibility offers new possibilities to process microwave signals directly in optical domain with high precision thus enhancing the MPF functionality. Nanosecond pulse shaping by implementing precisely defined filters is demonstrated to prove the filter superiority and practicability.In radio frequency (RF) systems, the microwave photonics (MWP) has been attracting persistent attentions since it provides potential possibilities to overcome some inherent limitations of electronics [1][2][3] . As a key MWP component, the microwave photonic filter (MPF) has been studied intensively and has shown its prominent superiority in terms of tunability and reconfigurability 4,5 . By using MPFs instead of conventional electrical filters, the RF system flexibility can be increased dramatically. The realization of the MPF can be roughly categorized into two approaches. One is delayed-tap based finite impulse response (FIR) filter. For this method, the RF signal is first modulated on several optical carriers at different wavelengths. Each carrier acts as a filter tap and the tap coefficients are usually set by amplitude and phase manipulation with liquid crystal based technique 6,7 . Then the RF-modulated carriers pass through dispersive media to obtain different time delay and are combined together to convert to RF signal. The optical carriers can be multiple laser diodes 8 , a broadband optical source 6 , an optical comb 7,9 or a multi-mode mode lock laser 10 . The dispersive media can be a dispersive fibre 11 or a chirped fibre Bragg grating (CFBG) 12 . This method provides certain flexibility but due to the inherent nature of the discrete FIR filter, the frequency response has multiple harmonic passbands, which restricts the filtering within one free spectral range (FSR). Several works have been reported to retain a single passband including employing an optical filter 7 and broadening the tap width 13 . The other category is using optical filter techniques to filter the RF-modulated optical signal directly by micro-ring resonators . Meanwhile, in order to enhance functionality and robustness and reduce cost, size and power consumption, there has been a consistent effort towards the integration of microwave photonic devices [18][19][20][21] . SBS effect can be considered as an active optical filter in terms of sig...

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“…In a previous work, a relatively low laser threshold of 22 mW was obtained for nonresonant pumping in a BFL made of a 3-m long suspended-core As 38 Se 62 chalcogenide fiber [9]. This laser had also very good intensity and frequency noise characteristics.…”

Section: Introductionmentioning

confidence: 92%

Linewidth-narrowing and intensity noise reduction of the 2nd order Stokes component of a low threshold Brillouin laser made of Ge_10As_22Se_68 chalcogenide fiber

Tow¹,

Léguillon²,

Fresnel³

et al. 2012

Opt. Express

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A compact second-order Stokes Brillouin fiber laser made of microstructured chalcogenide fiber is reported for the first time. This laser required very low pump power for Stokes conversion: 6 mW for first order lasing and only 30 mW for second order lasing with nonresonant pumping. We also show linewidth-narrowing as well as intensity noise reduction for both the 1 st and 2 nd order Stokes component when compared to that of the pump source.

show abstract

Relative intensity noise and frequency noise of a compact Brillouin laser made of As_38Se_62 suspended-core chalcogenide fiber

Cited by 40 publications

References 18 publications

6 mW and 30 mW laser threshold for respectively 1st and 2nd Brillouin Stokes order in a Ge10As24Se68 chalcogenide fiber

6 mW and 30 mW laser threshold for respectively 1st and 2nd Brillouin Stokes order in a Ge10As24Se68 chalcogenide fiber

Software-defined microwave photonic filter with high reconfigurable resolution

Linewidth-narrowing and intensity noise reduction of the 2nd order Stokes component of a low threshold Brillouin laser made of Ge_10As_22Se_68 chalcogenide fiber

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