Optoway

SPB-4940RLWG

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Tel: 886-3-5979798

Fax: 886-3-5979737

E-mail: sales@optoway.com.tw

http: // www.optoway.com.tw

2010/9/1

V2.0

2

Transmitter Optical Specifications (0

Parameter

Symbol

Min

Typ

Max

Units

Notes

Average Launch Power

1

5

dBm

1

Output Center Wavelength

λc

1320

1340

nm

Output Spectrum Width

1

nm

-20 dB width

Side Mode Suppression Ratio

SMSR

30

dB

Relative Intensity Noise

RIN

-128

dB/Hz

Average Launch Power of OFF

Transmitter

-30

dBm

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

µm single-mode fiber.

Receiver Optical Specifications (0

Parameter

Symbol

Min

Typ

Max

Units

Notes

Sensitivity

-15

dBm

2, Average Power

Receiver Overload

0.5

---

dBm

LOS -- Deasserted

---

---

-18

dBm

Transition: low to high

LOS -- Asserted

-30

---

---

dBm

Transition: high to low

Wavelength of Operation

λc

1260

1280

nm

3

2. A valid 8B/10Bencoded input is required for receiver sensitivity specification.

3. At least 30 dB optical isolation for the wavelength 1320 to 1340 nm.

Electrical Characteristics

Parameter

Symbol

Min

Typ

Max

Units

Notes

High-Speed Signal (CML) Interface Specification

Input Data Rate

1

6.25

Gb/s

Differential Input Impedance

Rin

100

Ω

Differential Data Input Amplitude

150

1200

mVpp

Internally AC coupled

Output Data Rate

1

6.25

Gb/s

Differential Output Impedance

Rout

100

Ω

Differential Data Output

Amplitude

350

600

700

mVpp

Internally AC coupled

Low-Speed Signal (LVTTL) Interface Specification

Input High Voltage

2.0

Vcc+0.3

V

Input Low Voltage

GND

0.8

V

Output High Voltage

2.4

Vcc

V

Output Low Voltage

GND

0.5

V