A novel broadband DBR laser for DWDM networks with simplified quasi-digital wavelength selection

Reid, D.C.J.; Robbins, David J.; Ward, Ashley J. W.; Whitbread, N.D.; Williams, Peter J.; Busico, G.; Carter, A.C.; Wood, A.K.; Carr, N.; Asplin, J.C.; Kearley, M.Q.; Hunt, W.J.; Brambley, D.R.; Rawsthorne, J.R.

doi:10.1109/ofc.2002.1036543

Cited by 14 publications

(6 citation statements)

References 3 publications

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“…Our design, the DS-DBR laser, has already been described in detail elsewhere [3][4][5][6][7] but in summary it consists of four main sections: a rear phase grating section, which produces a comb of reflection lines; a phase control section; a multi-quantum well gain section and a multi-contact, chirped grating at the front which is used for coarse wavelength selection. A low gain SOA (Semiconductor Optical Amplifier) is integrated onto the DS-DBR laser to boost the output power by about 3-4dB [6] and to allow for dark tuning and power levelling.…”

Section: Ds-dbr Design and Fabricationmentioning

confidence: 99%

Monolithic DBR-type fullband tunable lasers

Carter

2005

Optoelectronic Materials and Devices for Optical Communications

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Section: Ds-dbr Design and Fabricationmentioning

confidence: 99%

Monolithic DBR-type fullband tunable lasers

Carter

2005

Optoelectronic Materials and Devices for Optical Communications

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“…This information is generated by the manufacturer using a calibration system which is able to extract the required information. Bookham has recently been presented a laser structure which has a front tuning section with reduced tuning dependence of the loss, and with potentially easier control [12], figure 13. The rear reflector has a number of narrow, widely spaced reflection peaks as in the SGDBR.…”

Section: Monolithic Structuresmentioning

confidence: 99%

<title>What is new in WDM sources?</title>

Buus¹

2004

SPIE Proceedings

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This paper will describe some of the latest developments in the area of optical sources for WDM systems, including tunable lasers and multiwavelength sources. We will consider both DWDM and CWDM. We will start by looking at the source requirements, such as wavelength switching time, for various applications. After that we will give an overview of the latest developments in source options and technologies. The source options under discussion will include external cavity lasers, wavelength selectable laser arrays, tunable VCSELs, monolithic tunable lasers, and non-semiconductor alternatives. Numerous examples will be shown, and the characteristics and performance of the various devices will be discussed. The key performance parameters, such as tuning range, power and switching time will be related to the expected areas of application. These areas include sparing, fixed wavelength transmitter replacement, and use in wavelength switched networks. We will pay particular attention to packaging and modules, and discuss the emergence of pluggable lasers. Finally we will consider the prospects for uncooled operation. TUNABLE LASER APPLICATIONS AND REQUIREMENTSThe ability to choose a particular wavelength of operation makes tunable lasers, or wavelength selectable laser arrays, with an adjustable or uncommitted wavelength, attractive for different applications in WDM systems. It is convenient to classify the application areas in terms of the required wavelength switching time. Below we discuss possible application areas in order of increasing demand on the switching speed. We will use the term "tunable" as a generic term, i.e. including wavelength selectable sources.An obvious application for tunable lasers is sparing. Rather than keeping spare transmitter modules, or even whole linecards, for a number of separate specific wavelengths, it is far more cost efficient to keep just a few spares which incorporate tunable lasers. The laser wavelength is then set when the transmitter is needed. Sparing was for a long time seen as the first major market segment for tunable lasers. However, the emergence of hot-pluggable transmitters has made sparing cheaper, and consequently reduced the premium which the tunable laser manufacturers can charge for transmitters for this application. It is of course necessary for tunable lasers used for sparing to have properties (like for example output power) comparable to those of fixed wavelength lasers. A related application is provisioning of circuits in response to traffic demand. Use of tunable transmitters means that new circuits can be set up at any desired wavelength without the need for a stock of fixed wavelength transmitters.The wavelength flexibility paves the way for constructing reconfigurable networks, and to use tunable lasers for restoration and protection. For these applications sub-second switching times are required.Ultimately tunable lasers can be used in packet switched networks. These can take the form of burst mode switching where data is transmitted on a selected wavelengt...

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“…Though all three types of DBR lasers are interesting, this report will concentrate on the SG-DBR laser because it appears to be the most practical structure. However, other structures may emerge in the future, as the tunable semiconductor laser is still a popular research topic [46,51,52,53,54].…”

Section: Tunable Semiconductor Lasermentioning

confidence: 99%

Internet Protocol-Hybrid Opto-Electronic Ring Network (IP-HORNET): A Novel Internet Protocol-Over-Wavelength Division Multiplexing (IP-Over-WDM) Multiple-Access Metropolitan Area Network (MAN)

Kazovsky¹,

White²,

Rogge³

et al. 2003

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A novel broadband DBR laser for DWDM networks with simplified quasi-digital wavelength selection

Cited by 14 publications

References 3 publications

Monolithic DBR-type fullband tunable lasers

Monolithic DBR-type fullband tunable lasers

<title>What is new in WDM sources?</title>

Internet Protocol-Hybrid Opto-Electronic Ring Network (IP-HORNET): A Novel Internet Protocol-Over-Wavelength Division Multiplexing (IP-Over-WDM) Multiple-Access Metropolitan Area Network (MAN)

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