Title :
Design of amplifier- and modulator-integrated laser diode for 10-Gb/s 80-km transmission
Author :
Kim, In ; Kang, Byung-Kwon ; Bae, Yu-Dong ; Park, Byeonghoon ; Lee, Sang-Moon ; Kim, Young Hyun ; Jang, Dong-Hoon
Author_Institution :
Telecommun. R&D Center, Samsung Electron. Co., Suwon, South Korea
Abstract :
We present the amplifier- and modulator-integrated laser diode designed for 10-Gb/s transmission over 80-km distance. An antireflection window structure is implemented at the tilt facet of the amplifier to reduce optical feedback by 40 dB. A monitor photodiode is monolithically integrated in the antireflection window region for accurate power regulation. To better control the amplifier input power and to reduce the feedback of amplified spontaneous emission, an attenuation inner-window is incorporated by removing a section of the waveguide. The reproducibility of the chip fabrication process is tested to confirm the design margin. Through amplifying the modulated signals and reducing modulator chirp by amplifier saturation, high-power optical transmission is demonstrated.
Keywords :
antireflection coatings; chirp modulation; electro-optical modulation; integrated optics; integrated optoelectronics; monolithic integrated circuits; optical communication equipment; optical design techniques; optical feedback; optical fibre communication; optical saturation; optical variables control; optical waveguides; photodiodes; semiconductor optical amplifiers; superradiance; 10 Gbit/s; 10-Gb/s transmission; 80 km; amplified spontaneous emission; amplifier design; amplifier saturation; antireflection window; attenuation inner-window; chip fabrication process; high-power optical transmission; laser diode; modulated signal amplification; modulator chirp; modulator-integrated laser; monitor photodiode; monolithic integration; optical feedback; power regulation; Chirp modulation; Diode lasers; Monitoring; Optical amplifiers; Optical attenuators; Optical design; Optical feedback; Optical waveguides; Photodiodes; Semiconductor optical amplifiers; Attenuators; distributed feedback lasers; electroabsorption; monolithic integrated circuits; photodetectors; semiconductor optical amplifiers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2005.845615
