V. general specifications, Optical specifications, Optical interface standard specifications – Finisar 10GBASE-LRM X2 User Manual

Page 7

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FTLX1341E2 Product Specification – October 2008

© Finisar Corporation – October 2008

Rev B

Page 7

Optical Specifications

Parameter Symbol

Min

Typ

Max

Unit

Ref.

Transmitter

Optical Modulation Amplitude (OMA)

P

OMA

-4.5 +1.5

dBm

Average Launch Power

P

AVE

-6.5 +0.5

dBm

Peak Launch Power

P

MAX

+3

dBm

Optical Wavelength

λ

1260 1355

nm

λ

rms

@1260nm

2.4 1

λ

rms

@

1260nm-

1300nm

See Figure

2

Spectral Width

λ

rms

@

1300nm-

1355nm

4

nm

Optical Extinction Ratio

ER

3.5 dB

Optical Eye Mask Margin

0 %

2

Transmitter Waveform Dispersion
Penalty

TWDP

4.7

dB 3

Average Launch Power of OFF
Transmitter

P

OFF

-30

dBm

Uncorrelated Jitter [rms]

Tx

j

0.033

UI

Relative Intensity Noise

RIN

20

OMA

-128

dB/Hz

<5

μm

30

Encircled Flux

<11

μm

81

%

Tramsmitter Reflectance

-12

dB

Receiver

Overload in OMA

+1.5

dBm

4

Precursor -6.5

Symmetrical -6.0

Comprehensive Stressed Receiver
Sensitivity (OMA) @ 10.3125Gb/s

Postcursor

-6.5

dBm

Optical Center Wavelength

λ

C

1260 1355

nm

Receiver Reflectance

R

rx

-12

dB

Signal Detect Deassert Level

P

SDD

-14.4

dBm

Signal Detect Assert Level

P

SDA

-25.0 dBm

Signal Detect Hysteresis

P

SDH

0.5 1.5 dB

Notes:

1)

Maximum RMS spectral width as specified by Figure 68-3 in IEEE802.3aq -2006

2)

Optical eye mask per IEEE802.3aq -2006.

3)

TWDP is calculated using the Matlab code provided in clause 68.6.6.2 of IEEE802.3aq -2006

4)

Receiver overload specified in OMA and under the worst comprehensive stressed condition.

V. General Specifications

Optical Interface Standard Specifications

Fiber Type

850nm OFL Bandwidth

Symbol Distance

[1]

Units

“FDDI” 160MHz/km

220

62.5

μm

OM1 200MHz/km

Lmax

220

m

400MHz/km 100

OM2 500MHz/km

220

50

μm

OM3 2000MHz/km

Lmax

220

m

Notes:

1)

Operating range as defined by IEEE standards. Longer reach possible depending upon link implementation.

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