1241CAP 查看數據表（PDF） - Agere -> LSI Corporation

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1241CAP

Uncooled Laser Transmitter

Agere -> LSI Corporation 

1241/1243/1245-Type Uncooled Laser Transmitter

Data Sheet

September 1999

Characteristics (continued)

Table 3. Optical Characteristics

Parameter

Average Power Output Options1

Extinction Ratio2

Optical Rise and Fall Times3:

OC-3/STM-1

OC-12/STM4

1062.5 Mbits/s

Center Wavelength

RMS Spectral Width4

Side-mode Suppression Ratio5

Symbol

PO

rE

tR, tF

tR, tF

tR, tF

λ

∆λ

SMSR

Min

Typ

Max

See Ordering Information.

10

—

—

—

—

1.0

—

—

0.5

—

—

0.37

See Ordering Information.

—

—

4

30

—

—

Unit

dBm

dB

ns

ns

ns

nm

nm

dB

1. Output power definitions and measurement per ITU-T Recommendation G.957 and G.958.

2. Ratio of logic 1 to logic 0 power levels.

3. Between 10% and 90% (50% duty cycle).

4. Root-mean-square spectral width accounts for modes up to and including those 20 dB down from the central mode.

(Applies to 1241-Type only.)

5. Applies to 1243/1245-Type only.

Recommended User Interfaces

ECL

DRIVER

VEE

360 •

360 •

VEE

50 • MICROSTRIP OR STRIPLINE-

CONTROLLED IMPEDANCE TRACES

50 •*

16

15

50 •*

0.1 µF

D

TRANSMITTER

D

* Locate these components as close to DATA/DATA inputs as possible.

1-496(C).c

Note: The 1241 gigabit version does not require the external 50 Ω terminations since this termination is included inside the module.

Figure 2. dc-Coupled, Differential Input

6

Agere Systems Inc.

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