40 Gb/s transmission experiment using directly modulated 1.55 /spl mu/m DBR lasers

Directly modulated two section 1.55 /spl mu/m InGaAsP DBR lasers were used for 40 Gb/s error free operation back-to-back and through 1 km of standard single mode fiber. Low drive voltage (2 V/sub pp/) and low bias current (55-65) mA were used. The results show that directly modulated DBR lasers are potential candidates for low cost short distance links at 40 Gb/s.