DATASHEET| MARC H 16, 2008
For more information on this and other products:
Contact Sales at Emcore 626-293-3400, or visit www.emcore.com.
Features
Narrow linewidth, < 10 kHz
available
ITU wavelengths across the C-
band
100 GHz channel spacing
10 mW minimum output power
Industry standard, high
reliability, hermetic 14-pin
butterfly package
Excellent long-term
wavelength stability eliminates
the need for a wavelength
locker
Back-facet monitor
Designed to meet Telcordia
GR-468 qualification standard
Applications
Seismic sensor applic ations
Interferometry
Spectroscopy
Lidar
Optical test and
instrumentation
Microwave photonics
1792 ECCW Narrow Linewidth CW External
Cavity Laser Diode
The 1792 ECCW series external cavity laser is a cost effective solution
for a coherent laser source. The laser is fabricated in a 14-pin
hermetically sealed butterfly package that incorporates a bias tee
circuit, an integrated thermoelectric cooler (TEC), a thermistor, and a
back facet monitor photodiode. The 1792 ECCW provides substantially
lower phase noise and a longer coherence length than other
semiconductor lasers, including DFB lasers. The wavelength stability is
assured by design, eliminating the need for wavelength lockers and
complex feedback control circuits.
Performance Highlights
Min Typical Max Units
Minimum Optical Output Power, Version A
Version B
15
10
20
12 - mW
Optical Linewidth, CW, Version A
Version B
-
-
-
25
10
50 kHz
Operating Case Temperature Range -10 - +65 °C
Center Wavelength (100 GHz ITU Grid) 1527 - 1570 nm
Optical Isolation 35 - - dB
Optical Return Loss 40 - - dB
Side Mode Suppression Ratio, CW 40 - - dB
Relative Intensity Noise - -155 - dB/Hz
See following pages for complete specifications and conditions.
DATASHEET| MARC H 16, 2008
EMCORE CORPORATION
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Absolute Maximum Ratings1
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in
excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Parameters Symbol Condition/Notes MIN MAX Unit
Storage Temperature TSTG Non-Operating -40 85 oC
Operating Case Temperature TOP Continuous -20 75 oC
Forward Current IOP CW - 150 mA
Reverse Voltage VR Continuous - 2 V
Photodiode Forward Current IMPD,F Continuous - 2 mA
Photodiode Reverse Voltage VMPD,R Continuous - 10 V
TEC Current2 ITEC - - 1.8 A
TEC Voltage VTEC Continuous - 3.5 V
Fiber Bend Radi us R Continuous 35 - mm
Tensile Strength, Fiber to Case F Continuous - 5 N
Lead Soldering Time3 tsold < 260°C - 10 sec
Package Mounting Screw Torque4 - - 0.12 m*N
Operating Humidity: Non-Condensing Xop Continuous 5 95 %
Storage Humidity: Non-Condensing Xop Continuous 5 95 %
1. Absolute m aximum data are limited to syst em des i gn only; proper devic e performance is not guaranteed over rating list ed above. Operation
beyond these maximum conditions may degrade device performance, lead to device failure, shorter lifetime, and will invalidate the device
warranty.
2. TEC current should not exceed 2.0 A during turn on, and case temperature under any conditions should not change faster than 10oC/min.
3. Soldering iron onl y; no ref l ow or dip soldering allowed.
4. See mounting recommendations below.
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EMCORE CORPORATION
DATASHEET| MARC H 16, 2008
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Electrical/Opti cal Characteristics
Parameters Symbol Conditions/Notes MIN Typ MAX Unit
Minimum Optical O utput Power PO Version A
Version B 15
10 20
12 -
- mW
Optical Linewidth1,2,3,4 Version A, SMF
Version A, PMF
Version B
-
-
-
-
25
25
10
50
50 kHz
Threshold Current ITH - - - 30 mA
Laser Bias Current TOP - - - 130 mA
Forward Voltage VF CW, PO = 10 mW - - 2.0 V
MPD Current IMON CW, PO = 10 mW 0.05 - 0.5 mA
MPD Tracking Error TE -10ºC < TC < 65ºC - - ±0.5 dB
TEC Set Temperature5 Ts Specified for every laser 16 - 35 ºC
Center Wavelength (100 GHz ITU Grid) λc See ITU Grid Channel Numbering Table nm
Wavelength Drift with Case (-10 to 65 ºC)
Temperature ∆λΤc Relative to 25ºC Case
Temperature - - ±40 pm
Wavelength Offset from DWDM ITU Grid ∆λoffset TEC Temperature at TS - - ±80 pm
Frequency Temperature Coefficient ∆f/∆T - - 3.5 5 GHz/ºC
Frequency Current Coefficient ∆f/∆Ι - - 200 250 MHz/m
A
Optical Isolation - -10ºC < TC < 65ºC 35 - - dB
Relative Intensity Noise RIN CW, at 200 MHz - -155 - dB/Hz
Side Mode Suppression Ratio SMSR CW, PO > 1 mW 40 - - dB
Optical Return Loss ORL - 40 - - dB
TEC Current ITEC TC = 65ºC, TOP = TS - - 1.5 A
TEC Voltage VTEC TC = 65ºC, TOP = TS - - 3.0 V
TEC Capacity ∆T TC = 65ºC 50 - - ºC
Thermistor Resistance RTH TOP = TS 9.5 10.0 10.5 kΩ
Thermistor Beta Constant Β - - 3891 - K
1. CW, at rated power.
2. Lorentzian linewidth m easured at –30 dB.
3. Gaussian linewidth measured at –20 dB.
4. Linewidth measured with s elf-del ayed heterodyne method at Ts, Iop
5. TEC temperature at the recommended value.
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EMCORE CORPORATION
DATASHEET| MARC H 16, 2008
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Fiber Pigtail Specifications
Parameters Conditions/Notes MIN Typ MAX Unit
Fiber Type Single Mode Fiber, Corning SMF-28TM, or
Polarization Maintaining Fiber, Fujikura PANDA*
Mode Field Diameter - 9.0 10.4 11 µm
Cladding Diameter - 123.5 125.0 126.5 µm
Outer Diameter of Buffer - - 900 - µm
Length of Pigtail - - 2 - m
Optical Connector (See Ordering Information)
* NOTE: PMF versions available in sample quantities only.
Test Data
NOTE: The test data above assumes linewidth vers i on B.
0
2
4
6
8
10
12
14
0 102030405060708090100
Bias Current [ mA]
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Output Power
LD Voltage
0
2
4
6
8
10
12
14
0 102030405060708090100
Bias Current [mA]
0
20
40
60
80
100
120
140
160
180
Output Power
Photomonitor
Output
Power
(mW)
Output
Power
(mW)
LD
Voltage
(V)
MPD
Current
(mA)
Bias Current (mA) Bias Current (mA)
0
2
4
6
8
10
12
14
0 102030405060708090100
Bias Current [ mA]
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Output Power
LD Voltage
0
2
4
6
8
10
12
14
0 102030405060708090100
Bias Current [mA]
0
20
40
60
80
100
120
140
160
180
Output Power
Photomonitor
Output
Power
(mW)
Output
Power
(mW)
LD
Voltage
(V)
MPD
Current
(mA)
Bias Current (mA) Bias Current (mA)
5
EMCORE CORPORATION
DATASHEET| MARC H 16, 2008
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Outline Drawing
Pin Definit ions
Pin No. Function Pin
No. Function
1 Thermistor 8 Not Connected
2 Thermistor 9 Case Ground
3 Laser DC bias (-) 10 Case Ground
4 Photodetector Anode (-) 11 Case Ground
5 Photodetector Cathode (+) 12 Laser RF Cathode (-)
6 TEC (+) 13 Case Ground
7 TEC (-) 14 Case Ground
6
EMCORE CORPORATION
DATASHEET| MARC H 16, 2008
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
ITU Grid Channel Numbering
Channel Wavelength
(nm) Channel Wavelength
(nm) Channel Wavelength
(nm)
- - 46 1540.56 30 1553.33
- - 45 1541.35 29 1554.13
60 1529.55 44 1542.14 28 1554.94
59 1530.33 43 1542.94 27 1555.75
58 1531.12 42 1543.73 26 1556.56
57 1531.90 41 1544.53 25 1557.36
56 1532.68 40 1545.32 24 1558.17
55 1533.47 39 1546.12 23 1558.98
54 1534.25 38 1546.92 22 1559.79
53 1535.04 37 1547.72 21 1560.61
52 1535.82 36 1548.51 20 1561.42
51 1536.61 35 1549.32 - -
50 1537.40 34 1550.12 - -
49 1538.19 33 1550.92 - -
48 1538.98 32 1551.72 - -
47 1539.77 31 1552.52 - -
Reliability/Quality
Designed to meet qualification requirements of TelcordiaTM (Bellcore) GR-468-CORE.
Handling and Mounting
1. The Laser should be mounted on a heat sink at least 13 x 35 mm in size with surf ace finish better than 1 µm
and flatness better than 25µm. It is recommended that the laser be mechanically mounted to the heat sink
using M2-3 mm (#2-56) screws. Apply torque 0.1-0.11 m*N (0.8-1 lb*in). It is also recommended to use
thermally conductive grease between the laser package and heat sink.
2. The fiber pigtail must not be subject to a bend radius below 35mm.The fiber is unable to withstand
temperatures in excess of 120 ºC without degradation. Avoid high temperature contact during soldering
7
EMCORE CORPORATION
DATASHEET| MARC H 16, 2008
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Laser Safety
Class IIIb Laser Product
This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH
Class IIIb laser product. This device has been classif ied with the FDA/CDRH under accession number TBD.
W avelength = 1.5 µm.
Maximum power = 100 mW.
Because of size constraints, laser safety labeling (including an FDA class IIIb label) is not affixed to the module,
but attached to the outside of the shipping carton.
Product is not shipped with power supply.
Caution: Use of controls, adjustments and procedures other than those specified herein may resul t in
hazardous laser radiation exposure.
8
EMCORE CORPORATION
DATASHEET| MARC H 16, 2008
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Ordering Code Definitions
1792-vvv- www-xx-y-zz
Example
1792-SMF-430-10-B-FA: ECCW, SMF fiber pigtail, ITU channel 43, 1542.94 nm, 10 mW minimum output power, linewidth
option B, FC/APC optical connector
Information cont ai ned herei n is deemed to be reliable and accurate as of iss ue date. EMCORE reserves the right to change the design or specifications of
the product at any time without notice. Ortel, the Ortel logo, E MCORE, and the EMCORE logo are trademarks of EMCORE Corporation.
ds.1792 ¤ Copyright 2008. EMCORE Corporation
EMCORE CORPORATION
2015 West Chest nut Street
A
lhambra, California 91803-1542
Tel: 626- 293-34 00
Fax: 626-293-3428
www.emcore.com
Family Name
ECCW
Wavelength
www = 200: ITU Channel 20, 1561.42 nm
www = 210: ITU Channel 21, 1560.61 nm
…
www = 590: ITU Channel 59, 1530.33 nm
www = 600: ITU Channel 60, 1529.55 nm
Fiber Pigtail
vvv = SMF: Si ng le Mode Fiber
vvv = PMF: Po lar i zat ion Ma inta in ing Fib er
Connecto
r
zz = FA: FC/APC
zz = SA: SC/APC
Minimum Optical Output Powe
r
xx = 10: 10 mW Version
xx = 15: 15 mW Version
Linewidth
y = A: A Version
y = B: B Version
