Delta Electronics Sonet STM-16 Manual de usuario descargar pdf (Pagina 3)

DELTA ELECTRONICS, INC.

3 2008/11/17

Rev. 0A

www.deltaww.com

Optical Characteristics

Transmitter

=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=2

-1 NRZ)

Parameter Symbol Min. Typ. Max. Unit Note

Output Optical Power (Avg.)

-5

dBm

Optical Extinction Ratio ER 8.2 dB

Center Wavelength

1260 1310 1360 nm

Spectral Width (-20dB)

1 nm

Side-mode Suppression Ratio SMSR 30

Optical Rise/ Fall Time

150/200 psec 1

Return Loss RL 24 dB

Path Penalty 1 dB 2

Output Eye Compliant with GR-253 and ITU recommendation G.957

Receiver

=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=2

-1 NRZ)

Parameter Symbol Min. Typ. Max. Unit Note

Sensitivity (Avg.) P

-18 dBm 3

Input Optical Wavelength

1260 1310 1360 nm

LOS-Deasserted (Avg.) P

-18

dBm

LOS-Asserted (Avg.) P

-35 dBm

LOS-Hysteresis P

-P

0.5 dB

Overload P

0 dBm

Reflectance r -27 dB

Notes:

1. These are unfiltered 20%~80% values.

2. Measured at 2.488 Gb/s with a PRBS 2

-1 pattern at a BER<10

-10

over 15 km SMF-28 fiber.

3. The sensitivity is provided at a BER of 1×10

-12

or better with an input signal consisting of 2488Mb/s,

-1 PRBS and ER=9dB.

Mean level of logical “1”

Mean level of logical “0”

Amplitude

Time

Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957

1.25

1.00

0.75

0.25

0.00

-0.25

Mean level of logical “1”

Mean level of logical “0”

Amplitude

Time

Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957

1.25

1.00

0.75

0.25

0.00

-0.25

Mask of the eye diagram for the optical transmit signal

1 2 3 4 5 6 7 8 ... 12 13

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Delta Electronics Sonet STM-16 Manual de usuario Pagina 3

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