title: Improvement of modulation bandwidth in multisection RSOA for colorless WDM-PON.
abstract: We demonstrated two-section reflective semiconductor optical amplifier (RSOA) with dramatic improvement of small-signal modulation bandwidth above 10 GHz as colorless source for wavelength division multiplexed-passive optical network (WDM-PON). The device provides the fiber-to-fiber gain of 22.8 dB, 3-dB amplified spontaneous emission (ASE) bandwidth of 30 nm, and ripple of 1.5 dB. Good performance at 2.5 Gbps was obtained with an extinction ratio of 8 dB and a power penalty of 2 dB at a 10(-9) bit error rate (BER) up to 20 km transmission.
authors.affiliation: Optical/RF device department, ETRI, 161 Gajeong-dong, Yuseong, Daejeon 305-700, Korea. kimhyunsoo@etri.re.kr
authors.forename: Hyun-Soo
authors.initials: HS
authors.lastname: Kim
authors.forename: Byung-Seok
authors.initials: BS
authors.lastname: Choi
authors.forename: Ki-Soo
authors.initials: KS
authors.lastname: Kim
authors.forename: Dong Churl
authors.initials: DC
authors.lastname: Kim
authors.forename: O-Kyun
authors.initials: OK
authors.lastname: Kwon
authors.forename: Dae-Kon
authors.initials: DK
authors.lastname: Oh