FTTH RF over glass (RFoG) architecture and CPE with wavelength separator

1. A method, comprising: deploying a modified RFoG architecture and CPE device including

optically combining and detecting cable return signals from a plurality of CPEs with a single optical receiver at an FTTH hub; and at each of the plurality of CPEs

modulating a baseband upstream data signal by a HI PHY modem;

up-converting the baseband upstream data signal to a frequency band above a frequency band of an upstream cable return signal;

combining the up-converted upstream data signal with an upstream cable return signal;

transmitting the up-converted upstream data signal and the upstream cable return signal using a single upstream laser λ u3 ; and

separating, with a wavelength separator, A) a downstream data signal λ d3 and a downstream cable feed signal λ d1 from B) the transmitted combined λ u3 up-converted upstream data signal and upstream cable return signal; and

receiving the downstream data signal and the downstream cable feed signal using a single downstream receiver;

separating the downstream data signal from the downstream cable feed signal using an RF diplexer; and

wherein an upper frequency limit of a downstream baseband downstream data signal, F 1 , is less than a lower frequency limit of a downstream cable feed, denoted by F 6 , wherein F 1 <F 6 (F 6 <F 5 <F 4 <F 3 ) where F 5 is an upper frequency of the downstream cable signal, F 4 is the lower frequency of the up-converted downstream high speed data signal and F 3 is the upper frequency of the up-converted downstream high speed data signal.

2. An apparatus, comprising: a modified RFoG architecture and CPE device including

a single optical receiver at an FTTH hub that optically combines and detects cable return signals from a plurality of CPEs; each of the plurality of CPEs including

a HI PHY modem that modulates a baseband upstream data signal;

a frequency up-converter coupled to the HI PHY modem that up-converts the baseband upstream data signal to a frequency band above a frequency band of an upstream cable return signal;

a combiner coupled to the frequency up-converter that combines the up-converted upstream data signal with an upstream cable return signal;

a single upstream laser λ u3 coupled to the combiner that transmits the up-converted upstream data signal and the upstream cable return signal; and

a wavelength separator coupled to the single upstream laser that separates A) a downstream data signal λ d3 and a downstream cable feed signal λ d1 from B) the transmitted combined λ u3 up-converted upstream data signal and upstream cable return signal; and

a single optical receiver coupled to the wavelength separator that receives the downstream data signal and the downstream cable feed signal; and

an RF diplexer coupled to the single optical receiver that separates the downstream data signal from the downstream cable feed signal; and

wherein an upper frequency limit of a downstream baseband downstream data signal, F 1 , is less than a lower frequency limit of a downstream cable feed, denoted by F 6 , wherein F 1 <F 6 (F 6 <F 5 <F 4 <F 3 ) where F 5 is an upper frequency of the downstream cable signal, F 4 is the lower frequency of the up-converted downstream high speed data signal and F 3 is the upper frequency of the up-converted downstream high speed data signal.

3. A method comprising: deploying a modified RFoG architecture and CPE device including

optically combining and detecting cable return signals from a plurality of CPEs with a single optical receiver at an FTTH hub; and at each of the plurality of CPEs

up-converting the baseband upstream data signal to a frequency band above a frequency band of an upstream cable return signal;

combining the up-converted upstream data signal with an upstream cable return signal;

transmitting the up-converted upstream data signal and the upstream cable return signal using a single upstream laser λ u3 ,

separating, with a wavelength separator, A) a downstream data signal λ d3 and a downstream cable feed signal λ d1 from B) the transmitted combined λ u3 up-converted upstream data signal and upstream cable return signal; and

providing an upstream baseband signal from a G(E)PON chip before up-converting; and

receiving the downstream data signal and the downstream cable feed signal using a single downstream receiver;

separating the downstream data signal from the downstream cable feed signal using an RF diplexer; and

wherein an upper frequency limit of a downstream baseband downstream data signal, F 1 , is less than a lower frequency limit of a downstream cable feed, denoted by F 6 , wherein F 1 <F 6 (F 6 <F 5 <F 4 <F 3 ) where F 5 is an upper frequency of the downstream cable signal, F 4 is the lower frequency of the up-converted downstream high speed data signal and F 3 is the upper frequency of the up-converted downstream high speed data signal.

4. An apparatus, comprising: a modified RFoG architecture and CPE device including

a single optical receiver at an FTTH hub that optically combines and detects cable return signals from a plurality of CPEs, each of the plurality of CPEs including

a frequency up-converter that up-converts the baseband upstream data signal to a frequency band above a frequency band of an upstream cable return signal;

a combiner coupled to the frequency up-converter that combines the up-converted upstream data signal with an upstream cable return signal;

a single upstream laser λ u3 coupled to the combiner that transmits the up-converted upstream data signal and the upstream cable return signal and

a wavelength separator coupled to the single upstream laser that separates A) a downstream data signal λ d3 and a downstream cable feed signal λ d1 from B) the transmitted combined λ u3 up-converted upstream data signal and upstream cable return signal; and

a G(E)PON chip coupled to the frequency up-converter; and

a single optical receiver coupled to the wavelength separator that receives the downstream data signal and the downstream cable feed signal; and

an RF diplexer coupled to the single optical receiver that separates the downstream data signal from the downstream cable feed signal; and

wherein an upper frequency limit of a downstream baseband downstream data signal, F 1 , is less than a lower frequency limit of a downstream cable feed, denoted by F 6 , wherein F 1 <F 6 (F 6 <F 5 <F 4 <F 3 ) where F 5 is an upper frequency of the downstream cable signal, F 4 is the lower frequency of the up-converted downstream high speed data signal and F 3 is the upper frequency of the up-converted downstream high speed data signal.