High number of wavelength channels demonstrated by a widely tunable sampled-grating DBR laser

Ougier, C.; Talneau, A.; Delorme, F.; Slempkès, S.; Mathoorasing, D.

doi:10.1049/ip-opt:19960018

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…In the case of periodic index profile, the coupling constant is proportional to Fourier component (12) (for the sake of simplicity we omitted a cosine term in the Fourier integral, that is, we suppose a particular phase of the grating profile). In the case of quasi-periodic index profile, such as the binary gratings prepared according to (9)- (11), integrating over the period should be replaced by integrating over the total grating length .…”

Section: B the Concept Of Binary Superimposed Gratings (Bsg's)mentioning

confidence: 99%

Design of widely tunable semiconductor lasers and the concept of binary superimposed gratings (BSG's)

Avrutsky

Ellis

Tager

et al. 1998

IEEE J. Quantum Electron.

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We propose a new concept of binary superimposed gratings (BSG's) as multiwavelength grating reflectors and show it as an effective structural improvement over the existing designs, to both the fabrication process and device performance. We also present a study of key design issues for widely tunable lasers based on grating mirrors with a comb-like reflection spectrum and summarize simple design rules for the grating part of the laser, based on analytical and numerical analysis. The binary supergrating consists of elements of equal size whose refractive index is allowed to be one of two possible values, which are sequenced according to a binary optics formalism to effect a spatial superposition of multiple sets of single-frequency gratings, and its implementation is well within the standard ebeam lithography limits. The calculations of lasing frequency, mode, and side-mode suppression ratio of the tunable laser are formulated and presented along with numerical examples.

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Section: B the Concept Of Binary Superimposed Gratings (Bsg's)mentioning

confidence: 99%

Design of widely tunable semiconductor lasers and the concept of binary superimposed gratings (BSG's)

Avrutsky

Ellis

Tager

et al. 1998

IEEE J. Quantum Electron.

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“…The way to miniaturization of this type of laser is placing a spatially periodic section within the lasing structure so that the emitted wavelength is set and stabilized by such a grating [15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Two kinds of diodes are known: distributed feedback (DBF) [15,16], where the active area is periodically modulated, and distributed Bragg reflector (DBR) [17][18][19][20][21][22][23][24][25][26][27][28], where the grating area is separated from the active area. These types of stabilization are applied for lasing wavelength in the range 730-2800 nm, which is not convenient for distance measuring interferometers.…”

Section: Introductionmentioning

confidence: 99%

Frequency stabilization of a laser diode by means of an optical wedge etalon

Dobosz¹,

Kożuchowski²

2012

Meas. Sci. Technol.

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A novel laser diode (LD) wavelength stabilization system based on an optical wedge interferometer is presented. The proposed system uses an interference pattern from an external wedge etalon to detect frequency changes via a differential photodetector. Based on the etalon photodetector output signal, the feedback electronic circuit controls the LD current so as to obtain the LD wavelength as close as possible to the value set as a reference. Theoretical basis, design of the prototype system and metrological feasibilities of the device are presented. The absence of wavelength modulation during frequency stabilization, simplicity and low cost are the main advantages of the proposed technique.

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Sampled-grating DBR lasers with 80 addressable wavelengthsover 33 nm for 2.5 Gbit/s WDM applications

Ougier¹,

Talneau²,

Delorme³

et al. 1996

Electron. Lett.

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High number of wavelength channels demonstrated by a widely tunable sampled-grating DBR laser

Cited by 3 publications

References 5 publications

Design of widely tunable semiconductor lasers and the concept of binary superimposed gratings (BSG's)

Design of widely tunable semiconductor lasers and the concept of binary superimposed gratings (BSG's)

Frequency stabilization of a laser diode by means of an optical wedge etalon

Sampled-grating DBR lasers with 80 addressable wavelengthsover 33 nm for 2.5 Gbit/s WDM applications

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