Finisar HFD3180-103 Manuel D’Utilisation

HFD3180-103   2.5GBPS 850NM PIN + PREAMP

NOTES

1.

PR is the average optical power at the fiber face.

2.

PR,OMA is the peak to peak optical power at the fiber face
(Optical Modulation Amplitude)

where ER is the extinction ratio (linear) of the optical

source. 

3.

Bandwidth and Low Frequency Cutoff are measured with

a small signal sinusoidal light source with –12dBm

average power

4.

RMS input referred optical noise equivalent power is

obtained by measuring the RMS output noise into a 1875

MHz, 4-pole Bessel-Thompson filter then dividing by the

responsivity. A scaling factor of 14 is used to predict a BER

of 10

-12

.

5.

Sensitivity is measured with an optical source with an

extinction ratio of 3dB.

6.

Stressed receiver sensitivity is measured with 3.5dB

vertical eye closure (intersymbol interference) and with

0.3UI of jitter added. The measurement technique is

defined in IEEE 802.3ae.

7.

Rise/Fall times are corrected for optical source Rise/Fall

times.    T

2

TIA

= T

2

MEASURED

- T

2

OPTICAL

8.

Value shown is with no external power supply filtering. 

9.

The monitor current slope is measured as the current into

the PDBIAS connection.

10. Group delay is a sensitive measurement to package

interface, and includes the effects of PD, TIA and package.

Measurement is made with TO leads as short as possible.

11. DJTIA is specified as contributed DJ by the TIA, obtained

from     DJ

2

TIA

= DJ

2

TOTAL

- DJ

2

OPTICAL

12. RJTIA is specified as contributed DJ by the TIA, obtained

from    RJ

2

TIA

= RJ

2

TOTAL

- RJ

2

OPTICAL

(

)

1

1

2

,

+

−

≡