Widely tunable sampled grating DBR laser with integrated electroabsorption modulator

Mason, B.; Fish, G.A.; DenBaars, Steven P.; Coldren, L.A.

doi:10.1109/68.766769

Cited by 150 publications

(32 citation statements)

References 8 publications

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“…The dimension of SGDBR laser for the simulation includes a 450-m-long gain section, a 150-m-long phase section, and two sampled grating mirrors. The RSG contains eleven 71-m sampling periods with 8-m grating bursts and the FSG has eight 64-m sampling periods with 6.5-m grating bursts [18] .…”

Section: Results and Analysismentioning

confidence: 99%

Investigation on wavelength switching of widely tunable SGDBR lasers

Jiang¹,

Dong

Zhang³

et al. 2009

Chin. Sci. Bull.

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The sampled-grating distributed Bragg reflector (SGDBR) laser is a typical and important photonic integrated device, and has potential wide application to agile optical networks. A new dynamic model for this device has been developed, which combines the traveling-wave method for the active region and the transfer-matrix method for the passive sections into a single procedure. The behaviors of wavelength switching of the SGDBR laser, which include the transient spectrum and mode competition, have been studied in detail using this model. A new efficient way has been proposed to improve the wavelength switching performance only by increasing the coupling coefficients without changing the carrier density.SGDBR, traveling-wave method, transfer-matrix method, digital filter approach, wavelength switching Widely tunable lasers, which can set output wavelength according to the requirement, have attracted broad commercial attention and been viewed as the step stones toward the next generation agile optical networks. They are now playing an important role in optical networking, not only sparing dozens of fixed wavelength DFB lasers, but also becoming one of the key enablers for automatic wavelength provisioning and wavelength routing, furthermore to realize the dynamic bandwidth resource allocation and improve the network reliability, etc. [1] . Among various solutions for widely tunable lasers, sampled-grating DBR (SGDBR) lasers are the most promising candidates due to their wide tuning range and superior output performance. Furthermore, it also has potential application to optical packet/burst switching and wavelength switching due to its fast switching speed [2−4] .Both theoretical and experimental studies have verified that switching delay is mainly limited by the carrier lifetime in the passive sections and mode competition behaviors [5,6] . Many theoretical models have been established for analyzing the switching phenomena of the three-section DBR lasers [7−9] . However, limited by their complicated device structure of four-section SGDBR laser, these conventional dynamic models do not work very efficiently, especially the analysis of the dynamic behaviors during wavelength switching.The time-domain traveling-wave (TDTW) model is a powerful tool for simulating the dynamic behaviors and has been verified to give robust and reliable results for various types of lasers [10,11] . The essence of this model is that the bidirectional optical fields are operated in the time domain and moved forward each time-step t by a distance determined by the group velocity: z=v g t, and keep a consistent manner with the carrier density and optical gain [10] . However, its time-step should be small enough restricted by the Nyquist condition, and therefore, it is a challenging task to apply it to the SGDBR lasers due to their large dimension. Furthermore, the complex structure of the sampled grating further en-

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Section: Results and Analysismentioning

confidence: 99%

Investigation on wavelength switching of widely tunable SGDBR lasers

Jiang¹,

Dong

Zhang³

et al. 2009

Chin. Sci. Bull.

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“…In this calculation, we assumed that the lengths of the gain and phase sections were 450 and 150 µm, respectively, and the coupling coefficient was 350 cm −1 . This calculated device parameter was used in [16]. The oscillation frequency is given as the intersection point between the overlap phase of the two sampled grating DBRs and the phase of the active and phase control regions.…”

Section: Discussionmentioning

confidence: 99%

Stable and Fast Wavelength Switching in Digitally Tunable Laser Using Chirped Ladder Filter

Matsuo

Jeong

Segawa

et al. 2007

IEEE J. Select. Topics Quantum Electron.

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We propose a digitally tunable ring laser incorporating a chirped ladder filter and a ring resonator. The widely tunable ladder filter selects one channel from the periodic outputs of the ring resonator. Therefore, it is easy to change the lasing wavelength of this device. To obtain stable lasing operation, we employ chirping in the ladder filter. The chirped ladder filter has one dominant passband, and other peaks corresponding to the free-spectral range are suppressed. The device is monolithically integrated by using the InP-InGaAsP material system. The device is capable of 34-channel (100-GHz spacing) digitally tunable laser operation, and the sidemode suppression ratio is more than 40 dB. The switching time for any wavelength is less than 8 ns, and the frequency drift caused by the thermal transient is less than 500 MHz.Index Terms-Ladder filter, ring resonator, tunable laser, wavelength division multiplexing (WDM).

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“…SGDBR laser performance and fabrication details have been detailed elsewhere 8 . We mention here that they consist of a 350 nm thick GaInAsP waveguide layer, clad by InP.…”

Section: Experimental Performancementioning

confidence: 99%

Biophotonic integrated circuits

Cohen

Nolde

Wang

et al. 2004

Physics and Applications of Optoelectronic Devices

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Biosensors rely on optical techniques to obtain high sensitivity and speed, but almost all biochips still require external light sources, optics, and detectors, which limits the widespread use of these devices. The optoelectronics technology base now allows monolithic integration of versatile optical sources, novel sensing geometries, filters, spectrometers, and detectors, enabling highly integrated chip-scale sensors. We discuss biophotonic integrated circuits built on both GaAs and InP substrates, incorporating widely tunable lasers, novel evanescent field sensing waveguides, heterodyne spectrometers, and waveguide photodetectors, suitable for high sensitivity transduction of affinity assays.

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Widely tunable sampled grating DBR laser with integrated electroabsorption modulator

Cited by 150 publications

References 8 publications

Investigation on wavelength switching of widely tunable SGDBR lasers

Investigation on wavelength switching of widely tunable SGDBR lasers

Stable and Fast Wavelength Switching in Digitally Tunable Laser Using Chirped Ladder Filter

Biophotonic integrated circuits

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