Step-tunable (100 GHz) hybrid laser based on Verniereffect between Fabry-Perotcavity and sampled fibre Bragg grating

Lemieux, Jean‐François; Bellemare, A.; Latrasse, C.; Têtu, M.

doi:10.1049/el:19990583

Cited by 42 publications

(15 citation statements)

References 7 publications

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“…7 In fact, linewidths as little as 103 kHz have been demonstrated in sampled fiber gratings. 8 In general, the cavity reflectivity and length will be the controlling factors in the design of a semiconductor laser. Higher rear facet and grating reflectivities along with longer cavities will narrow the laser linewidth.…”

Section: Integrated Tunable Lasersmentioning

confidence: 99%

Hybrid integrated tunable optical transmitter subsystem on a chip

Eldada¹,

Newburgh²,

Fujita³

et al. 2002

SPIE Proceedings

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The need for tunable optical transmitters in optical networking is growing at a rapid rate. A tunable optical transmitter is the combination of a tunable laser, an isolator, and a modulator. Although today lasers and modulators could be integrated together on a single chip, an integrated component of this type would not be useful because the absence of an isolator between the two elements would cause optical reflections to reach the laser, leading to a high level of frequency chirp and relaxation oscillations. Therefore discrete external modulators are used, and lasers are coupled to them through discrete optical isolators. We report on recent developments in integrated active, thermo-optic, magneto-optic and electro-optic technologies that enable the production of a fully integrated tunable transmitter. This transmitter consists of a planar polymer waveguide circuit that is built on a silicon chip and in which films of a variety of materials are embedded. This subsystem on a chip includes a laser chip coupled to a thermo-optically tunable planar polymeric filter resulting in a tunable external cavity laser; an integrated magneto-optic isolator consisting of a planar polymer waveguide with inserted thin films of yttrium iron garnet for Faraday rotation, crystal ion sliced LiNbO 3 for half-wave retardation, and polarizers; and an electro-optic modulator consisting of a crystal ion sliced LiNbO 3 thin film patterned with a Mach-Zehnder interferometer and grafted into the polymer circuit, capable of operating with less than 5 Volts at modulation speeds up to 40 GHz.

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Section: Integrated Tunable Lasersmentioning

confidence: 99%

Hybrid integrated tunable optical transmitter subsystem on a chip

Eldada¹,

Newburgh²,

Fujita³

et al. 2002

SPIE Proceedings

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“…Various techniques have been proposed to develop such tunable fiber lasers [3][4][5][6]. Chawki et al, offered the first all fiber tunable semiconductor ring laser working at 1550 nm regime [7].…”

Section: Introductionmentioning

confidence: 99%

Widely tunable compact Er<sup>3+</sup>-doped fiber ring laser

Zhong

et al. 2010

2010 Academic Symposium on Optoelectronics and Microelectronics Technology and 10th Chinese-Russian Symposium on Laser Physics

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A widely tunable compact erbium-doped all fiber ring laser with 104nm turning range was reported. A fiber Fabry-Perot filter (FFP-TF) was used to be the tuning element to realize turning range from 1513nm to 1617nm with the linewidth less than 40 pm at any wavelength. The fiber laser worked with slope efficiency of above 10% and threshold of less than 21mW. This fiber laser can be used to realize wavelength interrogation with a relatively high speed and high resolution.

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“…Compared with the conventional single coupler subring cavity [25] , the TR-SC possesses better mode selection capability. The FSRs of rings a and b are 1 600 MHz and 410 MHz, respectively, calculated by the equation of FSR=c/nL i (L i denotes the ring length, and i denotes a or b), so the TR-SC has an FSR of 65.6 GHz according to the Vernier effect [26] . 65.6 GHz FSR is approximately corresponding to a wavelength range of 0.525 nm which is far beyond the 3-dB bandwidths of NB-FBG-1 and NB-FBG-2, indicating that there is only one longitudinal mode in the reflection bandwidth of NB-FBG-1 or NB-FBG-2.…”

mentioning

confidence: 99%

Single-/dual-wavelength switchable and tunable compound-cavity erbium-doped fiber laser with super-narrow linewidth

Tian

Yan

Liu

2016

Optoelectron. Lett.

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A single-/dual-wavelength switchable and tunable erbium-doped fiber laser (EDFL) with super-narrow linewidth has been proposed and experimentally demonstrated at room temperature. The fiber laser is based on a compound cavity simply composed of a ring main cavity and a two-ring subring cavity (TR-SC). Regardless of single-or dual-wavelength operation, the EDFL could always work well in single-longitudinal-mode (SLM) state at every oscillating wavelength. In dual-wavelength operation, the spacing could be tuned from 0 nm to 4.83 nm. In single-wavelength operation, the EDFL could lase at a fixed wavelength of 1 543.65 nm or another wavelength with a tunable range of 4.83 nm. The super-narrow linewidths of 550 Hz and 600 Hz for two wavelengths are obtained. The proposed EDFL has potential applications in microwave/terahertz-wave generation and high-precision distributed fiber optical sensing.Dual-wavelength single-longitudinal-mode (SLM) erbium-doped fiber lasers (EDFLs) are considered to be excellent sources for applications such as wavelength division multiplexing transmission system, fiber sensing, optical signal processing, LIDAR, and microwave photonic generation [1][2][3][4][5] . The single-/dual-wavelength switchable operation is another crucial target for research of EDFLs [6] .In order to achieve SLM operation for EDFLs, many configurations have been proposed in the past few decades, such as distributed feedback [7,8] , short-cavity distributed Bragg reflector [9] , conventional linear and ring cavities incorporating complicated ultra-narrow-band filters [10][11][12][13] , and compound cavity [14][15][16][17] . Due to the drastic mode competition induced by homogenous gain broadening effect in EDF, stable dual-wavelength SLM oscillation is not easy to achieve. In recent years, many researchers have reported different techniques to demonstrate stable dual-wavelength SLM EDFLs, such as a novel symmetrical fiber Bragg grating (FBG) structure as compact dual-wavelength laser cavity [2] , a reconfigurable dual-pass Mach-Zehnder interferometer (MZI) filter [18] , an unpumped polarization-maintaining EDF saturable absorber filter [19] , two superimposed FBGs and an in-line two-taper MZI filter [20] , a 70 cm long EDF loop attached to a microfiber coupler as wavelength filter [21] , a polarization-maintaining chirped Moiré FBG as ultra-narrow filter [22] , and a special U-bending apparatus based filter [23] . However, all of the techniques cannot achieve continuously tunable wavelength-spacing, switchable single-/dual-wavelength operation and narrow linewidth lasing simultaneously.In this paper, we propose and demonstrate a single-/dualwavelength switchable and tunable SLM EDFL with super-narrow linewidth based on a compound cavity which consists of a ring main cavity and a two-ring subring cavity (TR-SC). The performance of this EDFL is investigated in detail.The configuration of the proposed EDFL is shown in Fig.1. The fiber laser is based on a compound cavity consisting of a main cavity and a TR-SC. In the main ...

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Step-tunable (100 GHz) hybrid laser based on Verniereffect between Fabry-Perotcavity and sampled fibre Bragg grating

Cited by 42 publications

References 7 publications

Hybrid integrated tunable optical transmitter subsystem on a chip

Hybrid integrated tunable optical transmitter subsystem on a chip

Widely tunable compact Er<sup>3+</sup>-doped fiber ring laser

Single-/dual-wavelength switchable and tunable compound-cavity erbium-doped fiber laser with super-narrow linewidth

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Step-tunable (100 GHz) hybrid laser based on Verniereffect between Fabry-Perotcavity and sampled fibre Bragg grating

Cited by 42 publications

References 7 publications

Hybrid integrated tunable optical transmitter subsystem on a chip

Hybrid integrated tunable optical transmitter subsystem on a chip

Widely tunable compact Er<sup>3&#x002B;</sup>-doped fiber ring laser

Single-/dual-wavelength switchable and tunable compound-cavity erbium-doped fiber laser with super-narrow linewidth

Contact Info

Product

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Widely tunable compact Er<sup>3+</sup>-doped fiber ring laser