摘要
A compact multi-wavelength hybrid-integrated directly-modulated distributed-feedback laser(DML)transmitter optical sub-assembly(TOSA)has been achieved in our laboratory.The 8-channel distributed feedback(DFB)lasers are monolithically integrated based on the reconstruction-equivalent-chirp(REC)technology.With the high-density and high-speed packaging technique,the laser array and a multi-mode interference(MMI)multiplexer are assembled in the TOSA.The channel spacing of the TOSA is 200 GHz between adjacent lasers.It meets the 8 9 12.5 Gb/s operation demand and gives rather low channel crosstalk of less than-25 dB.This compact TOSA is of effective cost and shows good stability for mass production,which is expected to improve the performance of devices in access networks,data centers and supercomputing.
A compact multi-wavelength hybrid-integrated directly-modulated distributed-feedback laser （DML） transmitter optical sub-assembly （TOSA） has been achieved in our laboratory. The 8-channel distributed feedback （DFB） lasers are monolithically integrated based on the reconstruction-equivalent-chirp （REC） technology. With the high-density and high-speed packaging technique, the laser array and a multi-mode interference （MMI） multiplexer are assembled in the TOSA. The channel spacing of the TOSA is 200 GHz between adjacent lasers. It meets the 8 ; 12.5 Gb/s operation demand and gives rather low channel crosstalk of less than -25 dB. This compact TOSA is of effective cost and shows good sta- bility for mass production, which is expected to improve the performance of devices in access networks, data centers and supercomputing.
基金
supported by the National High-Tech Research&Development Program of China(2011AA010303,2013AA014201,and 2011AA010305)
the National Natural Sci-ence Foundation of China(61177080)
