Promising compact wavelength-tunable optical add-drop multiplexer in dense wavelength-division multiplexing systems.
We design and model a highly compact and tunable optical add-drop multiplexer (OADM) device that consists of long-period gratings and piezoelectric ceramic fiber stretchers. The proposed OADM shows that 50 dense wavelength-division multiplexing channel signals can be selected in the wavelength range from 1526.25 to 1563.75 nm with 0.75-nm channel spacing, which covers the whole C-band gain spectrum of an erbium-doped fiber amplifier. The cross talk between channels is less than -39 dB, and the total insertion loss of the device is approximately 0.24 dB, which includes the splicing losses, the mode mismatching loss, and the expected losses in the two side-by-side coupled fibers.
Zhu
Yinian
Y
Network Technology Research Center, Nanyang Technological University, 50 Nanyang Drive, Research TechnoPlaza, Singapore 637553. eynzhu@ntu.edu.sg
Shum
Ping
P
Lu
Chao
C
Swart
Pieter L
PL
Lacquet
Beatrys M
BM
Spammer
Stephanus J
SJ