Optoway

GBB-7840G

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Tel: 886-3-5979798

Fax: 886-3-5979737

E-mail: sales@optoway.com.tw

http: // www.optoway.com.tw

12/1/2005 V2.0

2

Transmitter Specifications (0

Parameter

Symbol

Min

Typ

Max

Units

Notes

Optical

Optical Transmit Power

Po

-3

---

2

dBm

1

Output Center Wavelength

λ

1260

1310

1360

nm

Output Spectrum Width

∆λ

1

nm

-20 dB width

Side Mode Suppression Ratio

SMSR

30

dB

Extinction Ratio

9

dB

Optical Rise Time

0.26

ns

20% to 80% value

Optical Fall Time

0.26

ns

20% to 80% value

Relative Intensity Noise

RIN

-120

dB/Hz

Total Jitter

TJ

227

ps

2

Max. Po at TX-Disable Asserted

-35

dBm

Electrical

Differential Input Voltage

0.65

2.0

Vp-p

Transmit Fault Load

4.7

10

kΩ

3

Transmit Fault Output-Low

0.0

0.5

V

Transmit Fault Output-High

Vcc – 0.5

Vcc + 0.3

V

TX-Disable Input - Low

0

0.8

V

TX-Disable Input - High

2.0

Vcc + 0.3

V

TX-Disable Assert Time

t_off

10

µs

TX-Disable Negate Time

t-on

1

ms

Time to initialize, includes reset

of TX-FAULT

t-int

300

ms

TX FAULT from fault to

assertion

t-fault

100

µs

TX-Disable time to start reset

t-reset

10

µs

Notes: 1. Output power is power coupled into a 9/125

µm single mode fiber.

2. Measured with a 2

3. Pull-up resistor on host Vcc.

Receiver Specifications (0

Parameter

Symbol

Min

Typ

Max

Units

Notes

Optical

Sensitivity

---

---

---

-23

dBm

4

Maximum Input Power

Pin

-3

---

dBm

4

Signal detect – Hysteresis

1.0

---

dB

Wavelength of Operation

1480

1500

nm

5

Optical Return Loss

ORL

12

dB

RX-LOS – Asserted

Pa

---

---

-23

dBm

Transition: low to high

RX-LOS – Deasserted

Pd

-31

---

---

dBm

Transition: high to low

Electrical

Differential Output Voltage

0.37

2.0

Vp-p

Data Output Rise Time

0.35

ns

Data Output Fall Time

0.35

ns

RX-LOS of Light Load

4.7

10

kΩ

6

RX-LOS Output Voltage --- Low

0

0.5

V

RX-LOS Outpu Voltage --- High

2.4

Vcc

V

RX-LOS Assert Time (off to on)

100

µs

RX-LOS Deassert Time (on to off)

100

µs

Notes: 4. Minimum sensitivity and saturation levels at BER=1E-12 for a 2

5. At least 30 dB optical isolation for the wavelength 1260 to 1360 nm.

6. Pull-up resistor on host Vcc.