LC25TCBJ34 [BOOKHAM]
2.5 Gb/s Buried Het 4x100GHz Tunable Laser with extended reach option; 2.5 Gb / s的埋地的Het 4x100GHz可调谐激光器扩展覆盖选项
| 型号： | LC25TCBJ34 |
| 厂家： | 
BOOKHAM, INC. |
| 描述： | 2.5 Gb/s Buried Het 4x100GHz Tunable Laser with extended reach option |
| 文件： | 总8页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
2.5 Gb/s Buried Het 4x100GHz Tunable Laser
with extended reach option
LC25T
This laser module employs the Bookham gain coupled
SLMQW buried heterostructure DFB laser chip, and has been
designed specifically for use in Wavelength Division Multiplexed
Features:
• 2.5 Gb/s Operation
(WDM) 2.5 Gb/s long distance optical fibre trunk systems.
• Tunable over four separate channels at 100 GHz
channel spacing
The device is packaged in a hermetically sealed 14-pin butterfly
package incorporating an isolator and monitor photodiode for
control of the power of the laser over life and all operating
conditions.
• +/-95pm wavelength stability over life
• Entire C band ITU wavelengths available
(1528 to 1563 nm)
The module is tunable by means of the internal thermo-electric
cooler over four adjacent 100 GHz ITU WDM channels with a
case temperature of 70°C, or over two adjacent 100 GHZ
channels with a case temperature of 85°C
• Narrow spectral line-width
• Hermetically sealed 14-pin butterfly package with
optical isolator
The device is available with a number of power options and
wavelength schemes, which are customizable to individual
customer specification.
• Internal TEC with precision NTC thermistor
• Extended reach performance up to 360 km with low
dispersion penalty
• RoHS compliant
Applications:
• Cost effective metropolitan or long haul networks
• Stock inventory / Spares reduction
• Network protection
• Low-speed routing / Networks reconfiguration
1
Data Sheet
Parameters
Parameter
Conditions
Min
Typ
Max
Unit
Threshold current (Ith)
Slope efficiency
10
22
mA
2 mW
3 mW
4 mW
0.04
0.06
0.08
0.09
0.13
0.17
0.43
mW/mA
mW/mA
mW/mA
mW/mA
High Power [1]
0.143
RF input reflection coef (S11)
Forward voltage
[2]
-10
1.8
1563
2
dB
V
1.3
Peak wavelength (λp)
Dispersion penalty
[3]
[4]
1527
nm
dB
nm
dB
ps
Time averaged spectral linewidth
Side-mode suppression
Optical rise/fall time
-20 dB
0.4
40
0.6
34
50
[5]
125
1200
100
Monitor photo current
Monitor dark current
Thermistor resistance
Heatpump current
250
µA
nA
4.07
20.7
1000
2.4
kΩ
mA
V
∆T = 64°C
∆T = 64°C
8 to 50°C
[6]
Heatpump voltage
Change of λ with laser temp.
0.09
nm/°C
pm
Change of λ over life and
-45
+145
operating conditions
[1] The high power version provides 10 mW peak output power for 175 km applications and 7 mW peak ouput power for
360 km applications.
[2] 50 Ω measurement system, f = dc - 3 GHz.
[3] Submount temperature between 8°C & 50°C start of life to achieve required λp.
[4] Dispersion penalty is compliant to a link length of 175 km or 360 km using an extinction ratio of 10dB. Fibre dispersion
characteristics are derived from the following equation:
4
So
λ
λ
0
D(λ) =
(λ −
)ps /(nm.km)
3
4
where So =0.092 ps/(nm2 km) and λ0 = 1302 nm.
[5] Measurements determined from 20 - 80% Pk - Pk
[6] For more information on wavelength control and drift over life refer to application note DR1670. To give symmetrical wavelength
performance about the ITU channel wavelength (+/-95pm) offset the laser wavelength by –50pm at start of life set up.
2
Data Sheet
Absolute Maximum Ratings
Parameter
Min
-20
-20
8
Max
85
Unit
°C
°C
°C
°C
mA
V
Case operating temperature (with 2 x 100 GHz tuning)
Case operating temperature (with 4 x 100 GHz tuning)
Laser submount operating temperature
Storage temperature
70
50
-40
85
Laser current above Ith
100
1.0
10
Laser reverse voltage
Laser reverse current
µA
V
Monitor diode bias
-10
1
Heat Pump Current
A
Heatpump voltage
2.4
V
Fibre bend radius
30
mm
Reliability/Quality
Meets Qualification requirements of Telcordia / Bellcore GR468-Core for central office environment.
Operating reliability <500 FITs1 in 15 years.
1 - Assumes laser die submount is held within the range 8°C to 50°C by the internal thermoelectric cooler and the product is
deployed in equal quantities on each of the four channels with a mean forward current of 35 mA. End of life limits based on 10 mA
increase in Ith and 25% change in laser efficiency. FIT rate data for other end of life criteria, including minimum extinction ratio
requirements, are available on request.
Outline Drawing
Figure 1: Outline Drawing and Pinout Information.
Note: Device can be supplied with the leads trimmed to a length of 3.81 mm typ.
Please see Order Information section.
3
Data Sheet
Figure 2: Schematic Diagram.
Connections
Pin #
Function
Pin #
8
Function
1
2
3
4
5
6
7
Thermistor
Case ground
Case ground
N/C
Thermistor
9
Laser DC bias (-)
Monitor anode (-)
Monitor cathode (+)
TEC (+)
10
11
12
13
14
Laser case ground
Laser modulation (-)
Laser case ground
N/C
TEC (-)
Instructions for use – LC25T
Pin 1 and Pin 2 Thermistor
The thermistor is used in a control loop in conjunction with the thermo-electric cooler to maintain the laser submount
temperature at the required value for wavelength. Operating current should be less than 100 µA to prevent
self-heating errors.
Pin 3 Laser DC bias (-)
Laser bias current (negative with respect to package ground) is applied via this pin which forms one side of the bias-T
connection to the laser cathode.
Pin 4 Monitor anode, Pin 5 Monitor cathode
The back facet monitor provides a mean power reference for the laser and is normally operated with a
5 V reverse bias.
Pin 6 TEC (+), Pin 7 TEC (-)
Applying a positive voltage on pin 6 with respect to pin 7 will cause the internal submount to be cooled relative to the
case temperature. Reversing the polarity will raise the submount temperature relative to the case. The TEC supply
should be capable of delivering up to 0.9 A at 2.4 V.
Pin 8, 9, 11, 13 Case ground
These pins must be grounded in all applications.
Pin 10
This pin is not connected for the LC25T product and it should be grounded if possible.
Pin 12 Laser modulation (-)
The data input (modulation current) is applied via this pin which is a nominal 25 Ohm impedance coplanar line.
For 10mW applications the end of life modulation current is 90mA maximum. For all other applications 60mA
maximum modulation current should be provisioned.
Pin 14 N/C
4
This pin is not connected. It should be grounded if possible.
Data Sheet
Ordering Information
LC25T [Wavelength]
****
[Power Option]
[Reach]
[Connector]
E = 2 mWpk
C = 3 mWpk
A = 4 mWpk
B = High power
A = 175 km -
B = 360 km -
J28 = SC/PC
J34 = FC/PC
J57 = LC
J59 = MU
Fibre Length 1130 to 1190 mm.
Other connector types are available on request.
**** = Last four digits of first channel / shortest wavelength
E.g. LC25T4532CA-J28 has the following four channels:
1545.32 nm
1546.12 nm
1546.92 nm
1547.72 nm
The high power option provides 10 mW peak power at 175 km or 7 mW peak power over 360 km.
E.g. LC25T4532BA-J28 is a 10 mW 1545.32 to 1547.72 nm device with an SC connector for use in a 175 km application.
E.g. LC25T4532BB-J28 is a 7 mW 1545.32 to 1547.72 nm device with an SC connector for use in a 360 km application.
Trimmed lead option
Devices can be supplied with the leads trimmed to a length of 3.81 mm typ.
This option can be specified by adding a ‘K’ suffix after the reach option.
E.g. LC25T4532BBK-J28 is a 7 mW 1545.32 nm device with an SC connector and a lead length of 3.81mm, for use in
a 360 km application.
-20°C to 85°C Case Temperature, 2 x 100 GHz Tunable Operation
Where a maximum case temperature of +85°C is required, the LC25T can be tuned over 2 adjacent 100 GHz channels.
With the elevated case temperature, the submount temperature tuning range becomes 25°C to 50°C.
Revised Parameters for 85°C Case Temperature Operation
Parameter
Conditions
Min
4.07
-20
25
Typ
Max
10
Unit
kΩ
°C
Thermistor resistance
Case operating temperature
Laser submount operating temperature
85
50
°C
5
Data Sheet
Ordering Information (continued)
To order the 85°C case temperature compliant device, the wavelength 2 channels below the required wavelength must
be selected.
See table below.
Lower channel
Upper channel
Wavelength
(nm)
ITU
Channel No.
Wavelength
(nm)
ITU
Channel No.
Wavelength
Code to Order
1527.22
1527.99
1528.77
1529.55
1530.33
1531.12
1531.90
1532.68
1533.47
1534.25
1535.04
1535.82
1536.61
1537.40
1538.19
1538.98
1539.77
1540.56
1541.35
1542.14
1542.94
1543.73
1544.53
1545.32
1546.12
1546.92
1547.72
1548.51
1549.32
1550.12
63
1527.99
1528.77
1529.55
1530.33
1531.12
1531.90
1532.68
1533.47
1534.25
1535.04
1535.82
1536.61
1537.40
1538.19
1538.98
1539.77
1540.56
1541.35
1542.14
1542.94
1543.73
1544.53
1545.32
1546.12
1546.92
1547.72
1548.51
1549.32
1550.12
1550.92
62
2566
2644
2722
2799
2877
2955
3033
3112
3190
3268
3347
3425
3504
3582
3661
3740
3819
3898
3977
4056
4135
4214
4294
4373
4453
4532
4612
4692
4772
4851
62
61
61
60
60
59
59
58
58
57
57
56
56
55
55
54
54
53
53
52
52
51
51
50
50
49
49
48
48
47
47
46
46
45
45
44
44
43
43
42
42
41
41
40
40
39
39
38
38
37
37
36
36
35
35
34
34
33
6
Data Sheet
Ordering Information (continued)
Lower channel
Upper channel
Wavelength
(nm)
ITU
Channel No.
Wavelength
(nm)
ITU
Channel No.
Wavelength
Code to Order
1550.92
1551.72
1552.52
1553.33
1554.13
1554.94
1555.75
1556.56
1557.36
1558.17
1558.98
1559.79
1560.61
1561.42
1562.23
1563.05
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
1551.72
1552.52
1553.33
1554.13
1554.94
1555.75
1556.56
1557.36
1558.17
1558.98
1559.79
1560.61
1561.42
1562.23
1563.05
1563.86
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
4932
5012
5092
5172
5252
5333
5413
5494
5575
5655
5736
5817
5898
5979
6061
6142
E.g. LC25T5252BB-J28 will operate at an 85°C maximum case temperature with a lower channel wavelength of 1554.13 nm and
can be tuned up one channel to 1554.94 nm.
7
Data Sheet
RoHS Compliance
Bookham is fully committed to environment
protection and sustainable development and has
set in place a comprehensive program for
removing polluting and hazardous substances from
all of its products. The relevant evidence of RoHS
compliance is held as part of our controlled
documentation for each of our compliant products.
RoHS compliance parts are available to order,
please refer to the ordering information section for
further details.
Contact Information
Important Notice
North America
Europe
Asia
Performance figures, data and any illustrative material
provided in this data sheet are typical and must be
specifically confirmed in writing by Bookham before
they become applicable to any particular order or
contract. In accordance with the Bookham policy of
continuous improvement specifications may change
without notice. The publication of information in this
data sheet does not imply freedom from patent or other
protective rights of Bookham or others. Further details
are available from any Bookham sales representative.
Bookham Worldwide
Headquarters
Paignton Office
Shenzhen Office
Brixham Road
Paignton
Devon
TQ4 7BE
United Kingdom
2 Phoenix Road
Futian Free Trade Zone
Shenzhen 518038
China
2584 Junction Ave.
San Jose
CA 95134
USA
• Tel: +86 755 33305888
• Tel: +1 408 919 1500
• Fax: +1 408 919 6083
• Tel: +44 (0) 1803 66 2000
• Fax: +44 (0) 1803 66 2801
• Fax: +86 755 33305805
+86 755 33305807
www.bookham.com
sales@bookham.com
DANGER
INVISIBLE LASER RADIATION
DO NOT VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS
CLASS 1M LASER
INVISIBLE LASER RADIATION
AVOID DIRECT
EXPOSURE TO BEAM
OUTPUT POWER 21mW
WAVELENGTH >1510nm
ISO14001:1996
REFERENCE IEC 60825-1: Edition 1.2
Caution - use of controls or adjustments or
performance of procedures other than
those specified herein may result in
hazardous radiation exposure.
EMS 504193
TL9000 Rev 3.0 (ISO9001:2000)
FM15040
CLASS IIIb LASER PRODUCT
THIS PRODUCT COMPLIES
WITH 21 CFR 1040.10
8
BH13089 Rev 1.0 January 2007.
©Bookham 2006. Bookham is a registered trademark of Bookham Inc.
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