Upgrading a power-splitting passive optical network using optical filtering
AssigneeLucent Technologies Inc.
InventorWayne H. Knox
Life of this patent
Estimating the term…
Abstract
The passive optical network system and method for providing a predetermined wavelength of data to remote users according to the present invention includes a multiple wavelength transmitter for transmitting a multiwavelength signal. The multiwavelength signal is provided by an access provider and has a plurality of signal components each of predetermined wavelength. A power-splitting passive optical network receives and power-splits the multiwavelength signal into a plurality of distributed multiwavelength signals each associated with a respective remote user. A filter selectively filters out, for each remote user, ones of the signal components of the associated distributed multiwavelength signal to provide the remote user with a selected one signal component of predetermined wavelength.
Claims15
A method of operating a passive optical network providing a predetermined wavelength of data to remote users comprising the steps of:
- a) providing, by an access provider, an optical multiwavelength signal having a plurality of signal components each of predetermined wavelength;
- b) transmitting the multiwavelength signal;
- c) receiving and power-splitting the multiwavelength signal into a plurality of distributed multiwavelength signals each associated with a respective remote user;
- and
- d) selectively filtering out, for each remote user, one of the signal components of the associated distributed multiwavelength signal to provide the remote user with a selected one signal component of predetermined wavelength;
- wherein step (d) further includes providing a card containing an optical filter, inserting the card into a remote optical network unit associated with the remote user, and positioning the card so that the optical filter is in position to intercept the respective multiwavelength signal and pass the selected one signal component.
A passive optical network system for providing a predetermined wavelength of data to remote users comprising:
- a multiple wavelength transmitter for transmitting a multiwavelength signal having a plurality of signal components each of predetermined wavelength, the multiwavelength signal being provided by an access provider;
- a power-splitting passive optical network for receiving and power-splitting the multiwavelength signal into a plurality of distributed multiwavelength signals each associated with a respective remote user;
- and
- a filter provided on a card for selectively filtering out, for each remote user, one of the signal components of the associated distributed multiwavelength signal to provide the remote user with a selected one signal component of predetermined wavelength;
- wherein the card is inserted into a respective remote optical network unit and positioned to intercept the multiwavelength signal for selectively passing the selected one signal component.
Dependencies are inferred from the claim text.