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| 型号： | D2525P893 |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成电路 |
| 文件页数： | 2/10页 |
| 文件大小： | 261K |
| 代理商： | D2525P893 |
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Data Sheet
March 2000
2
Lucent Technologies Inc.
Description
(continued)
Controlled Feedback
The module contains an internal optical isolator that sup-
presses optical feedback in laser-based, fiber-optic sys-
tems. Light reflected back to the laser is attenuated a
minimum of 30 dB.
Controlled Temperature
An integral thermoelectric cooler (TEC) provides stable
thermal characteristics. The TEC allows for heating and
cooling of the laser chip to maintain a temperature of 25
for case temperatures from –40
temperature is monitored by the internal thermistor, which
can be used with external circuitry to control the laser chip
temperature.
°
C
°
C to +70
°
C. The laser
Controlled Power
An internal, InGaAs, PIN photodiode functions as the back-
facet monitor. The photodiode monitors emission from the
rear facet of the laser and, when used in conjunction with
control circuitry, can control optical power launched into the
fiber. Normally, this configuration is used in a feedback
arrangement to maintain consistent laser output power.
Standard Package
The laser module is fabricated in a 14-pin, hermetic, metal/
ceramic butterfly package that incorporates a bias tee that
separates the dc-bias path from the RF input. The RF input
has a nominal 25
impedance.
The laser module is equipped with
maintaining fiber (PMF). The fiber is PANDA type and is the
same fiber that is used on Lucent Technologies Microelec-
tronics Group’s lithium niobate modulators. It has a mode
field diameter of 10.5
μ
m, a cladding diameter of 123
128
μ
m, and a loose tube jacketed fiber 900
ter. The pigtail is terminated with an
shows the orientation of polarization in the fiber.
Fujikura
* polarization-
μ
m—
μ
m in diame-
ferrule
. Figure 1
ST
Lucent’s optoelectronic components are being qualified to
rigorous internal standards that are consistent with
dia Technologies
TR-NWT-000468. All design and manu-
facturing operations are
ISO
being fully qualified for central office applications.
Telcor-
§
9001 certified. The module is
*
The
intended for testing purposes only.
Telcordia Technologies
Research, Inc.
§
ISO
is a registered trademark of The International Organization for
Standardization.
Fujikura
is a registered trademark of Fujikura Ltd.
ST
ferrule key is not aligned to slow axis of fiber. Connector is
is a trademark of Bell Communications
Figure 1. Polarization-Maintaining Fiber
Pin Information
1. A positive current through the thermoelectric heat pump cools the
laser.
2. Both leads should be grounded for optimum performance.
Top view.
Figure 2. Circuit Schematic
Table 1. Pin Descriptions
Pin
Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Thermistor
Thermistor
Laser dc Bias (Cathode) (–)
Back-facet Monitor Anode (–)
Back-facet Monitor Cathode (+)
Thermoelectric Cooler (+)
Thermoelectric Cooler (–)
Case Ground
Case Ground
Case Ground
Laser Anode (+)
RF Laser Input Cathode (–)
Laser Anode (+)
Case Ground
1
1
2
2
1-771(C).a
CORE
STRESS ROD
PRINCIPAL POLARIZATION
AXIS
CLADDING
INNER COATING
(SILICON & ACRYLATE)
OUTER COATING
(ACRYLATE OR NYLON)
1-567
TEC
L1
160 nH
ISOLATOR
R1
20
PACKAGE
GROUNDS
–
+
+
–
–
+
–
+
7
6
5
4
3
2
1
8
9
10
11
12
13
TH
10 k
14
相关PDF资料 |
PDF描述 |
|---|---|
| D2525P894 | Telecommunication IC |
| D2525P895 | Telecommunication IC |
| D2525P896 | Telecommunication IC |
| D2525P897 | Telecommunication IC |
| D2525P898 | Telecommunication IC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| D2525P894 | 制造商:AGERE 制造商全称:AGERE 功能描述:Telecommunication IC |
| D2525P895 | 制造商:AGERE 制造商全称:AGERE 功能描述:Telecommunication IC |
| D2525P896 | 制造商:AGERE 制造商全称:AGERE 功能描述:Telecommunication IC |
| D2525P897 | 制造商:AGERE 制造商全称:AGERE 功能描述:Telecommunication IC |
| D2525P898 | 制造商:AGERE 制造商全称:AGERE 功能描述:Telecommunication IC |
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