Future long-haul high-bit-rate transmission systems based on short-pulse transmission (e.g. soliton transmission) may require a return-to-zero (RZ) signal format.1 In network applications, the non-return-to-zero (NRZ) format, however, is preferred to the RZ format because of reduced electronic bandwidth requirements and greater timing tolerance. The conversion between the NRZ and RZ signals is a key process to interface all-optical network with high speed transmission systems.2,3 We had carried out an all-optical NRZ-to-RZ format conversion by using a walk-off balanced nonlinear fiber-loop mirror (WBNFLM).4 In this presentation, the reverse process, i.e., all-optical RZ-to-NRZ format conversion, using the WBNFLM is demonstrated. The principle used is the same as the switching mechanism of the WBNFLM with a cw probe beam.5 In this scheme, the extinction ratio degradation of the converted NRZ signals, which is a main drawback of previously reported works, is removed.

© 1996 Optical Society of America

PDF Article
More Like This
All-optical NRZ to RZ format conversion using a walk-off balanced nonlinear fiber loop mirror

Hak Kyu Lee, Kyong Hon Kim, Min-Yong Jeon, and El-Hang Lee
ThS2 Optical Fiber Communication Conference (OFC) 1996

Novel all-optical 10 Gbp/s RZ-to-NRZ conversion using SOA-loop-mirror

Hyuek Jae Lee, S. J. B. Yoo, and Chang Soo Park
MB7 Optical Fiber Communication Conference (OFC) 2001

All-optical modulation format conversion from NRZ-OOK to RZ-M-ary PSK based on fiber nonlinearity

Satoru Kitagawa, Suresh M. Nissanka, and Akihiro Maruta
OTuD6 Optical Fiber Communication Conference (OFC) 2008


You do not have subscription access to this journal. Citation lists with outbound citation 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
Login to access Optica Member Subscription