downstream wavelength range discussion review and solution proposal n.
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Downstream Wavelength Range discussion review and Solution Proposal. Supporters:. Basic ideas. Japan public fiber network requires band shorter than 1580nm, due to use of OTDR; and use of PX30 optics, due to designed loss budget PX30 must employ 1574 to 1580nm band

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Presentation Transcript
basic ideas
Basic ideas
  • Japan public fiber network requires band shorter than 1580nm, due to use of OTDR; and use of PX30 optics, due to designed loss budget
    • PX30 must employ 1574 to 1580nm band
  • PX10 and PX20 classes could benefit from 20nm of pass band, since uncooled transmitters are a possibility for these classes
  • How to widen the band in a most compatible way?
other concepts
Other concepts
  • It is good if our choice of band coincides with existing optical band plans
    • Most importantly, the CWDM bandplan
  • It is good (maybe) if the same receiver specification can operate over both transmitter specifications
    • The receiver band is the superset of all of the transmitter bands
    • We then have a ‘universal Rx’
wavelength plans
Wavelength Plans

EPON

Tx & Rx

Video

A

Option A: 1574 to 1580nm

(PX30 must use this band)

EPON

Tx & Rx

Video

B

Option B: 1574 to 1594nm

(potential superset)

EPON

Tx & Rx

Video

C

Option C: 1580 to 1600nm

(Alignment with CWDM)

EPON

Tx & Rx

Video

D

Option D: 1574 to 1600nm

(Superset and CWDM!)

EPON

Tx & Rx

Video

D

Option D: PX10-20 Tx

EPON

Tx & Rx

Video

D

Option D: PX30 Tx

1480 1500 1520 1540 1560 1580 1600

proposal
Proposal
  • Specify the downstream 10G EPON wavelength band to be 1574 to 1600 nm.
  • PX10 and PX20 Tx: 1580 to 1600nm
  • PX30 Tx: 1574 to 1580nm
  • All classes receivers: 1574 to 1600nm