Asymmetric twin-waveguide (ATG) technology wherein active and passive devices are formed in two separate waveguides, and light is coupled between them via a lateral taper, has proven to be a versatile integration platform for photonic integrated circuits. Here, we demonstrate a /spl lambda/=1.55 /spl mu/m wavelength, high-speed, high-efficiency photodetector made by integrating a spot-size converter with an evanescently coupled In/sub 0.53/Ga/sub 0.47/As absorption region. While several versions of waveguide photodetectors have been proposed to overcome the bandwidth-efficiency trade-off, the ATG design provides a simple means of fabrication with the possibility of monolithically integrating detectors with other optical components such as semiconductor optical amplifiers and in-plane waveguide filters.
High quantum efficiency, 40 GHz InGaAs twin waveguide PIN photodetectors
01.01.2001
200121 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
ThAA1 High Quantum Efficiency, 40 GHz InGaAs Twin Waveguide PIN Photodetectors
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