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Home / Laser diode / Special Laser Diode / 1550nm Narrow Linewidth Laser Diodes

1550nm Narrow Linewidth Laser Diodes

The PL-NL series directly modulated external cavity laser is cost effective solution for 2.5 Gbits/s digital transmission in SMF-28 fiber. This is fabricated in a hermetically sealed 14-pin butterfly package that contains thermoelectric cooler (TEC), thermistor, monitor photodiode, optical isolator.

The PL-NL provides substantially lower dispersion penalty  and lower chirp than a directly modulated DFB. The wavelength stability is assured by design, eliminating the need for wavelength lockers and complex feedback control circuits.

Name Price Operation
1550nm SM Narrow Linewidth Laser Diodes $2300.00
1550nm PM Narrow Linewidth Laser Diodes $2500.00
Features

● ITU wavelengths across C-band

● 100 GHz channel spacing

● SONET/SDH OC-48/STM16 ring and meshed applications

● Low dispersion provides

● Low transient chirp provides unique narrow dynamic spectrum

● Excellent long-term wavelength stability eliminates the need for a wavelength locker

Laser Specifications

Optical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Center Wavelength

λc

TL=1535 CW

1549.62

1550.12

1550.62

nm

Peak Optical   Output Power

PO

-

5

-

-

mW

Spectral linewidth

LW

-

-

75

100

KHz

Side-mode Suppression Ratio

SMSR

CW

30

40

-

dB

Optical Isolation

-

-10 < TC < +70 ºC

30

-

-

dB

Polarization Extinction Ratio

ER

-

20

-

-

dB

Relative Intensity Noise

RIN

CW, output power 5mW

-

-

-135

dB

Wavelength drift with case (-10 to 70 ºC) temperature

λ

TL=1535

-

-

±30

pm

Wavelength Temperature   coefficient

Δλ/ΔT

TL=1535

-

15

30

pm/ºC

Wavelength Current   coefficient

Δλ/ΔΙ

-

-

1.5

2

pm/mA


Electrical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Threshold Current

ITH

-

-

15

25

mA

Slope Efficiency

ƞ

CW output power 5 mW

0.064

0.1

-

mW/mA

Operating current

Iop

CW

-

150

200

mA

TEC set temperature

Ts

-

15

-

35

Laser Forward Voltage

VF

CW output power 5 mW

-

1.3

1.8

V

Monitor Dark Current

ID

-

-

-

0.1

μA

Input Impedance

ZIN

-

22

25

28

Ω

Thermistor Current

ITC

-

10

-

100

μA

Thermistor Resistance

RTH

T=   25 °C

9.5

10

10.5

TEC Current

ITEC

TL = 25 °C, TC = 70 °C

-

-

1.8

A

TEC Voltage

VTEC

TL = 25 °C, TC = 70 °C

-

-

3.5

V

TEC capacity

ΔT

Tc = 70°C

-

-

50

°C

Thermistor temperature

-

-

-

-

100

°C


Fiber Pigtail Specifications 

Parameters

Description

Fiber Type

PM fiber

Jacket Type

900μm loose   tube

Pigtail Length

1.0±0.1m

Connector Type

FC/APC

PM fiber   Connector Orientation

Please see the   right figure

MM.jpg


Note: The PM fiber and the connector key are aligned to the slow axis,fast axis is blocked.

Package Size

16542_副本.png

Pin definition

16543.jpg

1

Thermistor

8

Case Ground

2

Thermistor

9

 Case   Ground

3

Laser dc Bias   (Cathode) (–)

10

Case Ground

4

PD Monitor   Anode (-)

11

Laser Anode   (+)

5

PD Monitor   Cathode (+)

12

RF Laser Input   Cathode (–)

6

Thermoelectric   Cooler (+)

13

Laser Anode   (+)

7

Thermoelectric   Cooler (–)

14

Case Ground


Absolute Maximum Ratings

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.

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Storage temperature

Ts

-

-40

-

85

Operating case temperature

Top

-

-15

-

75

Forward Current

IF

CW

-

-

280

mA

Reverse Voltage

VR

-

-

-

2

V

Photodiode Forward Current

IFPD

-

-

-

2

mA

Photodiode Reverse Voltage

VRPD

-

-

-

10

V

TEC current

ITEC

-

-

0.8

1.5

A

TEC voltage

VTEC

-

-

1.5

3.5

V

Application

● Metro and Long Haul DWDM,100 GHz spaced networks

● SONET/SDH OC-48/STM16 ring and meshed applications

● Drop-side of DWDM long-haul transport equipment

● Optical Test and Instrumentation

● Microwave Photonics

● CATV networks

● Sensors

OEM Info

PL-NL - □□□□-☆-▽- XX-14BF

□□□□:Wavelength

1550:1550nm

1555:1555nm

*****

1560:1560nm

☆ :Output Power

A:10mW

B:20mW

▽:Linewidth

1:<100KHZ

2:<200KHZ

XX: Fiber and Connector Type

SA=SMF-28E+ FC/APC

SP=SMF-28E+ FC/PC

PP=PM Fiber+ FC/PC

PA=PM Fiber+ FC/APC