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Showing 1 to 11 of 11 for “"DBR-Laser"”.
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Microwave Signal Generation Using Self-Heterodyning of a Fast Wavelength Switching SG-DBR Laser
… using a single-chip fast wavelength-tunable SG-DBR laser. Microwave signals are established by a delayed self-heterodyne technique. The optical frequency of the laser is square-wave modulated between two closely spaced wavelengths. These two wavelengths are made time coincident using a fiber …
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Swept-Frequency Sampled Grating Distributed Bragg Reflector Lasers Optimized for Optical Coherence Tomography Applications
… sampled grating distributed Bragg reflector (SG-DBR) laser provides wide wavelength tuning range while exhibiting a wavelength switching speed that is among the fastest currently available. The SG-DBR laser is used to generate linear frequency ramps with high repetition rates. Since the SG-DBR …
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Fabrication and measurements of surface-etched grating distributed Bragg reflector laser
A laser diode emits light at a specific wavelength band and can be used in specific applications depending on its wavelength. However, the bandwidth of the laser gain is relatively broad, so a distributed Bragg reflector (DBR) laser is used to make a narrow linewidth laser. The thesis discusses …
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Surface -Etched Distributed Bragg Reflector Lasers in Photonic Integrated Circuits
A high-power DBR laser array is also presented for use in spectral beam combining systems. The laser structure for this application is engineered for high-power applications. The engineering of the lateral optical guiding structure as well as the surface-etched grating is discussed.
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Narrow frequency-band laser with optical feedback
… the construction of a narrow frequency-band laser with optical feedback. We use a distributed Bragg reflector (DBR) laser diode centered at the cesium D₂ transition wavelength, [gamma] = 852 nm. The linewidth of this diode is reduced by several orders of magnitude by means of optical feedback …
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Point-Spread Function Assessment of SG-DBR Based Swept Source for OCT Imaging
… high repetition rate, widely-tunable coherent laser sources. Sampled grating distributed Bragg reflector (SG-DBR) lasers are proven in telecom applications and are expected to fulfill the requirements for SS-OCT at a significantly lower cost than alternative solutions.</p> <p>Constructed …
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Automated SG-DBR Tunable Laser Calibration Optimized for Optical Coherence Tomography Applications
<p>SG-DBR lasers look to solve many problems associated with present OCT sources by being cost effective, smaller in size, more robust, and by operating at faster repetition rates. Swept Source Optical Coherence Tomography (SS-OCT) requires a tunable laser source that exhibits linear frequency …
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Neuartige nanostrukturierte Halbleiterlaser und Mikroringresonatoren auf InP-Basis für Wellenlängenmultiplexsysteme in der optischen Nachrichtenübertragung
… verschiedene optoelektronische Bauelemente (Laser und Filter) definiert werden können. Die Kombination dieser Definitionsprozesse mit speziellen nass- und trockenchemischen Ätzverfahren erlaubt die Herstellung von Bauelementen mit sehr hoher Genauigkeit, Reproduzierbarkeit und monolithischer …
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Optical pulse distortion and manipulation through polarization effects and chromatic dispersion
… of a standard distributed Bragg reflector (DBR) laser, and then apply the dispersion of the ultra-long FBG. Picosecond pulses are formed, whose repetition rate is independent of the laser cavity length. Since the gain of the laser is not modulated, the timing jitter is fundamentally limited …
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Adaptation of VT-Dbr Lasers for LIDAR
<p>Vernier Tuned Distributed Bragg Reflector (VT-DBR) lasers have had great success in the field of Swept-Source Optical Coherence Tomography (SS-OCT) due to their continuous and nearly 40 nm wavelength tuning range in a single longitudinal mode. Fast sweeps allow for real time imaging with …
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Wavelength tunable transmitters for future reconfigurable agile optical networks
… The combination of a widely tuneable SG DBR laser and an EAM is a propitious technique employed to generate wavelength tuneable pulses at high repetition rates (40 GHz). As the EAM is inherently wavelength dependant an accurate characterisation of the generated pulses is carried out using …