Abstract
A novel wavelength reuse scheme based on phase-modulation to intensity-modulation
(PM-IM) conversion and destructive interferencing using a polarization modulator
(PolM) and a fiber Bragg grating (FBG) in an ultra-wideband (UWB) over fiber
(UWBoF) system is proposed and experimentally demonstrated. In the proposed
scheme, a PolM and an FBG in the central station (CS) are used to generate
intensity-modulated impulse UWB signal based on PM-IM conversion. The downstream
UWB signal is sent to a base station (BS) over an optical fiber. At the BS,
when the principle axis of the polarizer is aligned with one of the two orthogonal
states of polarization (SOPs), the downstream UWB signal is received and detected.
When the principle axis of the polarizer is oriented at a special angle to
one of the two orthogonal SOPs, a clear optical carrier without intensity
modulation is generated, which is then reused for upstream UWB data transmission.
A theoretical analysis is performed which is verified by an experiment. A
bidirectional point-to-point transmission of 1.25 Gb/s UWB signal over 25-km
single-mode fiber (SMF) using a single light source from the CS is demonstrated.
The receiver sensitivity and the BER performance for both downstream and upstream
transmissions are measured.
© 2013 IEEE
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