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학술대회 4-Channel Distributed Bragg Reflector Laser Array Integrated with 1O-Gbps Electroabsorption Modulator
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심재식, 권용환, 김성복, 백용순, 류상완
Asia-Pacific Microwave Conference (APMC) 2007, pp.1-4
07MB1100, 60GHz Pico cell 통신용 SoP, 유현규
A 4-channel wavelength division multiplexing transmitter was fabricated with an array of distributed Bragg reflector (DFB) lasers monolithically integrated with 10-Gbps electroabsorption (EA) modulators. A selective area growth technique was employed for the control of bandgap energy in the gain and modulator sections. Then the laser and modulator stripes were fabricated by a buried heterostructure process. The DBR lasers showed uniform threshold currents between 5-10 mA, while the slope efficiency was around 0.11 W/A. By controlling the DBR currents, a 4-channel transmitter was achieved for the channel spacing of 100 GHz (0.8 nm). The 3-dB bandwidth of the EA modulator was measured to be over 10 GHz for all bias voltages. The EA modulator showed clear eye openings under 10-Gbps non-return-to-zero modulation. It allowed 10-Gbps error-free operation over a 25-km long single mode fiber.
KSP 제안 키워드
10 Ghz, 3-dB bandwidth, Band-gap energy, Channel spacing, Distributed Bragg reflector laser, Laser array, Selective area growth, Single-mode fiber(SMF), Slope efficiency, Wavelength Division Multiplexing(WDM), bias voltage