Abstract

We have successfully fabricated a 100-GHz spacing 8-channel light source using hybrid integration technologies based on planar lightwave circuits (PLCs). The light source was composed of UV-written Bragg gratings and laser diode (LDs) on PLC platforms. To adjust the Bragg wavelength to the ITU-T grid, we used a precise phasemask with eight different pitches. Moreover,to suppress temperature-dependent mode hopping, we tuned the longitudinal mode wavelength so that it became stable by photosensitively modifying the waveguide refractive index in the cavity, which we achieved using an ArF excimer laser, in addition to inserting silicone in the cavity. As a result, we obtained eight lasing wavelengths controlled to those of the ITU-T grids and optical powers of more than 1.5 mW at an injection current of 80 mA without any temperature dependent mode hopping in the 8-channel light source. We also confirmed direct modulation at 2.5 Gb/s in every channel and we showed that we could modulate two adjacent channels simultaneously without any interference effect. These results show that the compact PLC-type integrated light source is promising for use in WDM systems.

© 2004 IEEE

200 GHz-spacing 8-channel multi-wavelength lasers for WDM-PON optical line terminal sources

Su Hwan Oh, Jang-Uk Shin, Ki Soo Kim, Dong-Hoon Lee, Sang-Ho Park, Hee-Kyung Sung, Yong-Soon Baek, and Kwang-Ryong Oh
Opt. Express 17(11) 9401-9407 (2009)

Eight-channel laser array with 100  GHz channel spacing based on surface-slotted structures fabricated by standard lithography

Mingjin Wang, Hailing Wang, Pijie Ma, Fengxin Dong, Anjin Liu, and Wanhua Zheng
Opt. Lett. 43(20) 4867-4870 (2018)

Polarization-insensitive 40-channel 100-GHz spacing fold-back planar echelle grating Mux/Demux for photonic integrated wavelength-selective switches

Yu Wang and Nicola Calabretta
Opt. Lett. 47(20) 5268-5271 (2022)

Design optimization of integrated BiDi triplexer optical filter based on planar lightwave circuit

Chenglin Xu, Xiaobin Hong, and Wei-Ping Huang
Opt. Express 14(11) 4675-4686 (2006)

Tunable external cavity laser employing uncooled superluminescent diode

Su Hwan Oh, Ki Soo Kim, Jung Jin Ju, Min-su Kim, Ki-Hong Yoon, Dae Kon Oh, Young-Ouk Noh, and Hyung-Jong Lee
Opt. Express 17(12) 10189-10194 (2009)