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Updated: Jun 13, 2026
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
2.5-Gb/s hybridly-integrated tunable external cavity laser using a superluminescent diode and a polymer Bragg
Ki-Hong Yoon1, Su Hwan Oh, Ki Soo Kim
1Photonic-Wireless Convergence Components Department, Electronics and Telecommunications Research Institute,138 Gajeongno, Yuseong-gu, Daejeon, 305-350, Republic of Korea. khyoon@etri.re.kr
Abstract:
We presented a hybridly-integrated tunable external cavity laser with 0.8 nm mode spacing 16 channels operating in the direct modulation of 2.5-Gbps for a low-cost source of a WDM-PON system. The tunable laser was fabricated by using a superluminescent diode (SLD) and a polymer Bragg reflector. The maximum output power and the power slope efficiency of the tunable laser were 10.3 mW and 0.132 mW/mA, respectively, at the SLD current of 100 mA and the temperature of 25 degrees C. The directly-modulated tunable laser successfully provided 2.5-Gbps transmissions through 20-km standard single mode fiber. The power penalty of the tunable laser was less than 0.8 dB for 16 channels after a 20-km transmission. The power penalty variation was less than 1.4 dB during the blue-shifted wavelength tuning.
