Abstract:A monolithic optoelectronic device structure with the potential to enable VCSEL-based photonic integrated circuits on GaAs is presented. Using integrated diffraction gratings, the device structure enables the optical output of VCSELs to be coupled to an internal horizontal waveguide, while the optical signals in the waveguide are tapped off to resonant cavity detectors. Since horizontal waveguides are used to route the optical signals between devices, the output mirror transmission of the VCSELs can be elimina… Show more
“…If properly designed, a strong diffraction efficiency approaching 50% in each lateral direction can be achieved by having the partial diffracted optical fields add coherently and constructively during successive passages of light through the resonance cavity. This was first demonstrated [7,8] by using an all-epitaxially-grown AlGaAs/GaAs vertical-cavity resonance structure in which a semiconductor optical waveguide containing a waveguide-grating coupler (WGC) is embedded within the resonance cavity. By allowing the in-plane coupling of light from VCSELs into the optical waveguides, this technology approach enables the monolithic integration of surface-normal devices such as VCSELs and resonance-enhanced photodetectors (REPDs) [9], which communicate via the embedded waveguide.…”
Section: Physical Layer Implementationmentioning
confidence: 99%
“…To overcome this obstacle, an effective means is needed that can couple light efficiently from the vertical cavity of the VCSEL into a horizontal waveguide. One promising approach [7,8] is to embed an optical waveguide within the resonance cavity of the VCSEL, and then utilize diffraction gratings to couple light from the VCSEL cavity into the waveguide. If properly designed, a strong diffraction efficiency approaching 50% in each lateral direction can be achieved by having the partial diffracted optical fields add coherently and constructively during successive passages of light through the resonance cavity.…”
The demand for bandwidth and interconnectivity in aerospace and other defense networks and systems continues to expand. To meet this demand while still satisfying the unique requirements of these systems, innovative approaches are needed. For future networks to meet these goals, they will need to have high bandwidths that are scalable to the requirements of particular applications. In addition, the networks need to be very fault tolerant, protocol independent, non-blocking, low latency, and have low power consumption and small size. OptiComp Corporation has developed a unique network architecture where the hardware is distributed across the network, allowing the network to be self routing and highly fault tolerant. This network architecture is enabled by OptiComp's integrated optoelectronic technologies including waveguide coupled VCSELs and detectors, compact WDM, SOAs, and hybrid integration.Waveguide grating couplers that enable a VCSEL to be coupled bidirectionally into an internal waveguide and allow a portion of the light in a waveguide to be tapped off to a detector comprise the core of OptiComp's integrated optoelectronics. This on-chip coupling into and out of a waveguide enables coarse WDM multiplexing and demultiplexing to be accomplished in a very small area with no additional packaging, making the structure more compact and rugged. Waveguide coupled device results will be presented, including high-speed data transmission between waveguide coupled VCSELs and detectors. Preliminary results on waveguide coupled WDM components will also be discussed. In addition to the enabling components, the implementation of the network architecture will also be presented.
“…If properly designed, a strong diffraction efficiency approaching 50% in each lateral direction can be achieved by having the partial diffracted optical fields add coherently and constructively during successive passages of light through the resonance cavity. This was first demonstrated [7,8] by using an all-epitaxially-grown AlGaAs/GaAs vertical-cavity resonance structure in which a semiconductor optical waveguide containing a waveguide-grating coupler (WGC) is embedded within the resonance cavity. By allowing the in-plane coupling of light from VCSELs into the optical waveguides, this technology approach enables the monolithic integration of surface-normal devices such as VCSELs and resonance-enhanced photodetectors (REPDs) [9], which communicate via the embedded waveguide.…”
Section: Physical Layer Implementationmentioning
confidence: 99%
“…To overcome this obstacle, an effective means is needed that can couple light efficiently from the vertical cavity of the VCSEL into a horizontal waveguide. One promising approach [7,8] is to embed an optical waveguide within the resonance cavity of the VCSEL, and then utilize diffraction gratings to couple light from the VCSEL cavity into the waveguide. If properly designed, a strong diffraction efficiency approaching 50% in each lateral direction can be achieved by having the partial diffracted optical fields add coherently and constructively during successive passages of light through the resonance cavity.…”
The demand for bandwidth and interconnectivity in aerospace and other defense networks and systems continues to expand. To meet this demand while still satisfying the unique requirements of these systems, innovative approaches are needed. For future networks to meet these goals, they will need to have high bandwidths that are scalable to the requirements of particular applications. In addition, the networks need to be very fault tolerant, protocol independent, non-blocking, low latency, and have low power consumption and small size. OptiComp Corporation has developed a unique network architecture where the hardware is distributed across the network, allowing the network to be self routing and highly fault tolerant. This network architecture is enabled by OptiComp's integrated optoelectronic technologies including waveguide coupled VCSELs and detectors, compact WDM, SOAs, and hybrid integration.Waveguide grating couplers that enable a VCSEL to be coupled bidirectionally into an internal waveguide and allow a portion of the light in a waveguide to be tapped off to a detector comprise the core of OptiComp's integrated optoelectronics. This on-chip coupling into and out of a waveguide enables coarse WDM multiplexing and demultiplexing to be accomplished in a very small area with no additional packaging, making the structure more compact and rugged. Waveguide coupled device results will be presented, including high-speed data transmission between waveguide coupled VCSELs and detectors. Preliminary results on waveguide coupled WDM components will also be discussed. In addition to the enabling components, the implementation of the network architecture will also be presented.
“…Vertical-cavity surface-emitting lasers (VCSELs) have a great potential for integration with other components such as photodetectors through a waveguide grating coupler (WGC) to form optoelectronic integrated circuits on a single platform [1]. In our early work, we demonstrated a monolithic VCSEL structure with bidirectional coupling to an internal horizontal waveguide by means of an embedded diffraction grating [2].…”
Integrated waveguide-grating-coupled VCSEL/RCEPD arrays with >1.4 mW/facet output power and VCSEL-to-photodetector data communication at >1.25 Gbps through an integrated waveguide have been demonstrated. This technology will enable practical applications using VCSEL-based photonic integrated circuits.
“…If properly designed, a strong diffraction efficiency approaching 50% in each lateral direction can be achieved by having the partial diffracted optical fields add coherently and constructively during successive passages of light through the resonance cavity. This was first demonstrated [1,2] by using an all-epitaxially-grown AlGaAs/GaAs vertical-cavity resonance structure in which a semiconductor optical waveguide containing a waveguide-grating coupler (WGC) is embedded within the resonance cavity. In this early work [2], a monolithic VCSEL structure achieved bidirectional coupling to an internal horizontal waveguide by means of embedded diffraction grating couplers.…”
Section: Introductionmentioning
confidence: 99%
“…To overcome this obstacle, an effective means is needed that can couple light efficiently from the vertical cavity of the VCSEL into a horizontal waveguide. One promising approach that has been proposed [1,2] is to embed an optical waveguide within the resonance cavity of the VCSEL, and then utilize diffraction gratings to couple, i.e., to diffract light from the VCSEL cavity into the waveguide. If properly designed, a strong diffraction efficiency approaching 50% in each lateral direction can be achieved by having the partial diffracted optical fields add coherently and constructively during successive passages of light through the resonance cavity.…”
Heterogeneous integrated waveguide-grating-coupled VCSEL and REPD arrays have been demonstrated, achieving an output power of >1.4 mW per facet, and VCSEL-to-photodetector data communication at 2.5 Gb/s through an integrated waveguide. Integrated WDM arrays have also been achieved. This technology enables the realization of VCSEL-based planar photonic integrated circuits.
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