T2 Series Media Converters

3

belfuse.com/cinch

Fiber Link Budget Reference

Symbol

Definition

Units

P = TPOWER,MIN - RSENS,MIN

Equation 1 – Calculating Power Budget

B = (D * AFIBER) + (NSPLICE * LSPLICE) + (NCONN * LCONN)

Equation 2 – Calculating Link Budget

M = P - B

Equation 3 – Calculating Link Margin / Buffer

P

Power Budget

dB

B

Link Budget

dB

D

Link Distance

KM

M

Link Margin / Buffer

dB

NSPLICE

Number of Splices

-

NCONN

Number of Connectors

-

AFIBER

Attenuation, Fiber

dB / KM

LSPLICE

Loss, Splice

dB

LCONN

Loss, Connector

dB

TPOWER, MIN

Transmit Power Minimum

dBm

RSENS, MIN

Receiver Sensitivity Minimum

dBm

Fiber Mode

Fiber Type

Wavelength

Fiber Attenuation

Splice Loss

Connector Loss

(Core/Clad

Ø

)

AFIBER

LSPLICE

LCONN

Multimode

OM1 (62.5/125um)

850nm

3.5 dB / KM

0.1 dB Typical

1 dB Typical

OM1 (62.5/125um)

1310nm

1.5 dB / KM

0.1 dB Typical

1 dB Typical

OM2 (50/125um)

850nm

3.5 dB / KM

0.1 dB Typical

1 dB Typical

OM2 (50/125um)

1310nm

1.5 dB / KM

0.1 dB Typical

1 dB Typical

OM3 (50/125um)

850nm

3.5 dB / KM

0.1 dB Typical

1 dB Typical

OM3 (50/125um)

1310nm

1.5 dB / KM

0.1 dB Typical

1 dB Typical

OM4 (50/125um)

850nm

2.5 dB / KM

0.1 dB Typical

1 dB Typical

OM4 (50/125um)

1310nm

0.8 dB / KM

0.1 dB Typical

1 dB Typical

Singlemode

OS1 (9/125um)

1310nm

1.0 dB / KM

0.1 dB Typical

1 dB Typical

OS1 (9/125um)

1550nm

1.0 dB / KM

0.1 dB Typical

1 dB Typical

OS2 (9/125um)

1310nm

0.4 dB / KM

0.1 dB Typical

1 dB Typical

OS2 (9/125um)

1550nm

0.4 dB / KM

0.1 dB Typical

1 dB Typical

Custom properties & configurations available by request.

Cinch can vary optical properties (increasing Tpower, min or decreasing Rsens, max) to improve overall link budget.