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Temperature tuning of dispersion compensation using semiconductor asymmetric coupled waveguides
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10.1063/1.2136417
/content/aip/journal/jap/98/11/10.1063/1.2136417
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/11/10.1063/1.2136417
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Cross-sectional schematic view of two vertically coupled asymmetric ridge waveguides, in which and modes are coupled; and denote refractive indices . UWG and LWG indicate upper waveguide and lower waveguide. (b) Schematic frequency dependence of group velocities for individual (uncoupled) modes ( and : broken lines) and coupled modes (solid lines).

Image of FIG. 2.
FIG. 2.

Schematic view of basic structure of dispersion compensator based on two vertically coupled asymmetric ridge waveguides.

Image of FIG. 3.
FIG. 3.

Schematic diagram of fabricated device with two vertically coupled asymmetric InGaAsP ridge waveguides. Note that denotes refractive index.

Image of FIG. 4.
FIG. 4.

(a) Calculated propagation wave numbers of symmetric and antisymmetric coupled modes for the waveguide shown in Fig. 3. (b) Calculated GVDs of symmetric and antisymmetric coupled modes for the waveguide shown in Fig. 3.

Image of FIG. 5.
FIG. 5.

(a) Measured autocorrelation (ac) signal for output pulse (together with that for input pulse); denotes FWHM of signal, denotes FWHM of pulse duration obtained by assuming -shaped pulse, and denotes pulse-compression ratio, defined as the ratio of for output pulse to for input pulse. (b) Calculated autocorrelation (ac) signal for output pulse (together with that for input pulse); same notation as in (a).

Image of FIG. 6.
FIG. 6.

GVD curve used in the calculation (broadened), together with GVD (not broadened), which is the same as that shown in (b). ’s are the corresponding coupling strengths.

Image of FIG. 7.
FIG. 7.

Calculated GVDs of the coupled modes for various changes in temperature: . denotes detuning wavelength from the peak wavelength at .

Image of FIG. 8.
FIG. 8.

(a) Measured autocorrelation (ac) signals for different temperatures. denotes temperature and denotes pulse-compression ratio. (b) Measured and calculated FWHM of the ac signals for output pulses as a function of temperature.

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/content/aip/journal/jap/98/11/10.1063/1.2136417
2005-12-12
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Temperature tuning of dispersion compensation using semiconductor asymmetric coupled waveguides
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/11/10.1063/1.2136417
10.1063/1.2136417
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