상세정보
학술지
Long-Reach Transmission Characteristics of Tunable External Cavity Laser
- 발행일
- 201510
- 출처
- Journal of Nanoscience and Nanotechnology, v.15 no.10, pp.7462-7466
- ISSN
- 1533-4880
- 출판사
- American Scientific Publishers (ASP)
- 협약과제
- 14PB5200, 5세대 유무선통합망용 10Gbps 파장가변 광송수신기 및 운용 SW 개발, 김민수
- 초록
- We report the transmission capability of a tunable external cavity laser (T-ECL) that utilizes a superluminescent diode (SLD) and a polymer Bragg reflector (PBR) operating with a direct modulation of 2.5 Gb/s for a light source of a long-reach wavelength division multiplexed-passive optical network (WDM-PON). The T-ECL successfully operated at an ambient temperature of -20°C to 70°C when employing a cooled SLD. A tuning range of 12-nm is achieved with a tuning power of lower than 80 mW. A side mode suppression ratio of more than 35 dB was obtained for the whole tuning range. The linewidth of the lasing spectrum is less than 0.1 nm at 20 dB from the peak power. The transmission performance of the T-ECL, including an optical bandpass filter (OBPF), is better than that of the T-ECL excluding an OBPF for a long-reach transmission over 80 km of single mode fiber (SMF). The power penalty of the T-ECL is less than 1.4 dB when using an OBPF for an 80-km transmission.
- KSP 제안 키워드
- Ambient Temperature, Band-pass filter(BPF), Bragg reflector, Direct modulation, External cavity laser, Light sources, Long-reach transmission, Optical bandpass filter(OBF), Peak power, Single-mode fiber(SMF), Superluminescent diodes(SLDs)