Abstract
This letter proposes and experimentally demonstrates a simple scheme for
generating 40-GBaud carrier-suppressed return-to-zero differential quadrature phase
shift keying (CSRZ-DQPSK) modulation signals with tunable pulsewidths using two
dual-parallel Mach-Zehnder modulators (DPMZMs). The duty cycle of the generated
40-GHz CSRZ-DQPSK pulse train is continuously tuned from 31% to 62%, with the
full-width at half-maximum tuned from 7.8 to 15.5 ps, by electrically tuning the
delay between the two sine-clock signals in one of the DPMZMs. Error-free
performance is achieved after 320-km transmission.
© 2012 Chinese Optics Letters
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription