Wavelength-selectable microarray light sources for S-, C-, and L-band WDM systems

Hatakeyama, H.; Naniwae, K.; Kudo, K.; Suzuki, N.; Sudo, S.; Ae, S.; Muroya, Y.; Yashiki, Kenichiro; Satoh, K.; Morimoto, T.; Mori, Koichi; Sasaki, T.

doi:10.1109/lpt.2003.813430

Cited by 32 publications

(16 citation statements)

References 6 publications

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“…The NEC device 10 (without inserted sheet polarizers) contains 6 laser arrays, and each array consists of 8 FF-DFB lasers. 6 laser arrays provide 135 frequency selectable channels (also tuned by varying the temperature) with a total selectable Figure 1.…”

Section: System Structure and Six-dimensional Multilayer Storagementioning

confidence: 99%

Six-dimensional optical storage utilizing wavelength selective, polarization sensitive, and reflectivity graded Bragg reflectors

Liu

2014

SPIE Proceedings

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An optical storage system which stores data in three spacial and three physical dimensions is designed and investigated. Its feasibility has been demonstrated by theoretical derivation and numerical calculation. This system has comprehensive advantages including very large capacity, ultrafast throughputs, relatively simple structure and compatibility with CD and DVD. It's an actually practicable technology. With two-photon absorption writing/erasing and optical coherence tomography reading, its storage capacity is over 32 Tbytes per DVD sized disk, and its reading speed is over 25 Gbits/s with high signal-to-noise ratio of over 76 dB. The larger capacity of over 1 Pbyte per disk is potential.

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Section: System Structure and Six-dimensional Multilayer Storagementioning

confidence: 99%

Six-dimensional optical storage utilizing wavelength selective, polarization sensitive, and reflectivity graded Bragg reflectors

Liu

2014

SPIE Proceedings

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“…For the reported cases, a tuning range was 7.2 nm for a multi-electrode DFB laser [24], 8 nm for a TTG DFB laser [26], and 5.8 nm for a multi-electrode DBR laser [27]. Then, to get wide tunability within the whole C-band and/or L-band, special structure should be introduced, for example, arrayed DFB lasers with several wavelengths [31,32], multi-electrode structure such as a super structure grating (SSG), a sampled grating (SG), a digitally sampled grating (DS) DBR laser [33][34][35], and the integration structure using an SOA and a wavelength-selective filter such as a ladder filter, ring resonators, a movable grating with an MEMS, or a liquid crystal tunable filter [36][37][38][39][40][41][42]. This section focuses on those structures.…”

Section: Reported Technologies and Issues Of Tunable Semiconductor Lamentioning

confidence: 99%

Semiconductor Lasers for High-Density Optical Communication Systems

Uenohara

2010

High Spectral Density Optical Communication Technologies

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Semiconductor lasers have several advantages compared to other types of lasers (a fiber ring laser, a solid-state laser, a gas laser), such as compactness, integrability to other components (a modulator, a power monitor photodiode, a wavelength tuning component). In addition, a monolithic tunable laser can be fabricated in the semiconductor by combining wavelength tuning regions and a phase control region together with an active region. That is why a monolithic integrated semiconductor tunable laser is very attractive not only for a compact light source for large-capacity, optical communication systems but also for economical backup resource. However, there are several technical issues to achieve high-quality semiconductor tunable lasers applicable to high-density optical communication systems due to the severe requirements of narrow spectral linewidth, wide tunability, and high wavelength stability.In this chapter, several technical methodologies for improving spectral linewidth and wavelength tunability are overviewed. Requirements to Spectral LinewidthFor realization of large-capacity and long-haul WDM optical transmission systems, significant distortion by both chromatic and polarization mode dispersion should be overcome. For that solution, modulation scheme with narrow signal bandwidth is the recent trends. For example, multi-level modulation format, such as DQPSK and M-QAM, and multi-carrier modulation, such as OFDM, have been intensively investigated. For these modulation schemes, high-sensitive receiver is necessary, and therefore, transmission signal is detected with digital coherent detection technique. Therefore, even for a tunable semiconductor laser, narrow spectral linewidth

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“…Up to now, two main configurations are usually used. One is cascaded tunable DFB laser sharing the same waveguide and the other is DFB laser array with a multiplexer for single waveguide output [15,16]. For the cascaded method, all sections for different wavelengths are fabricated in series and share a single waveguide.…”

Section: Introductionmentioning

confidence: 99%

Study of cascaded tunable DFB semiconductor laser with wide tuning range and high single mode yield based on equivalent phase shift technique

Song

et al. 2015

Optics Communications

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Wavelength-selectable microarray light sources for S-, C-, and L-band WDM systems

Cited by 32 publications

References 6 publications

Six-dimensional optical storage utilizing wavelength selective, polarization sensitive, and reflectivity graded Bragg reflectors

Six-dimensional optical storage utilizing wavelength selective, polarization sensitive, and reflectivity graded Bragg reflectors

Semiconductor Lasers for High-Density Optical Communication Systems

Study of cascaded tunable DFB semiconductor laser with wide tuning range and high single mode yield based on equivalent phase shift technique

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