785nm Single frequency FBG stabilized Tunable Narrow Linewidth Laser Diodes   2021-12-10    


The PL-NL series Fiber Bragg Grating laser is single frequency laser diode module designed for optical measurement and communication. The laser is packaged in 14-pin standard butterfly package with monitor photodiode and thermo-electric cooler (TEC).


Product model



Name Model Price
785nm PM Narrow Linewidth Laser Diode  [PDF]  [RFQ]

PL-NL-785-A-A81-PA-PZT
Stock NO.: A80111038
USD 2100.00 
 
785nm SM Narrow Linewidth Laser Diode  [PDF]  [RFQ]

PL-NL-785-A-A81-SA-PZT
Stock NO.: A80111037
USD 1900.00 
 


Parameter



Features

● Optical output: 20mW

● Narrow linewidth (Δν <1MHz)

● Wavelength: 785nm @ 25℃

● SM or PM Fiber (ø0.9mm)

● FC-APC connector

● 14-pin butterfly package

● Internal monitor PD and TEC

● Low power consumption 

E/O Characteristics

Optical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Center Wavelength

λc

TL=1535 CW

780

785

790

nm

Peak Optical Output Power

PO

-

-

10

20

mW

Spectral linewidth

LW

-

-

1

10

MHZ

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

CWoutput 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

-

65

80

pm/ºC

Wavelength Current coefficient

Δλ/ΔΙ

-

-

1.0

2

pm/mA

Tuning Range(For PZT Version)

Δf


0.5


1

nm

PZT Driving Voltage( PZT Version)

VT


0


150

V

Mode Hope free Range

ΔI



30


mA


Electrical Characteristics (at 25 °C laser temperature)

Parameter

Symbol

Condition

Min.

Typical

Max.

Unit

Threshold Current

ITH

-

-

45

65

mA

Operating Current

Iop

CW

-

80

100

mA

Slope Efficiency

ƞ

CW output power 30 mW

0.064

0.1

0.4

mW/mA

TEC set temperature

Ts

-

15

-

35

Laser Forward Voltage

VF

CW output power@30 mW

-

1.3

2.5

V

Input Impedance

ZIN


22

25

28

Ω

Monitor Dark Current

ID

-

-

-

0.1

μA

Thermistor Current

ITC

-

10

-

100

μA

Thermistor Resistance

RTH

TLD=25°C

9.5

10

10.5

TEC Current

ITEC

TLD=25°C,   TC=70°C

-

-

1.8

A

TEC Voltage

VTEC

IF=EOL, TC=70°C

-

-

3.5

V

TEC capacity

ΔT

Tc = 70

-

-

50

Thermistor temperature

-

-

-

-

100


Spectrum 

W}U0[42DO[@B48`)$HO175B.png

L-I Curve

785.png

Wavelength VS PZT Voltage

 UPXJ)E}5KH2{Z9Z16(73H}B.jpg


Beam Quality(M2,2D/3D Beam)

t1.jpg


t2.jpg


t3.jpg


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

t4.png

Pin definition

t5.png

PZT Built Inside

1

Thermoelectric Cooler (+)

8

PZT tuning -

2

Thermistor

9

N/C

3

PD Monitor Anode (-)

10

laser Anode (+)

4

PD Monitor Cathode (+)

11

Laser Cathode (–)

5

Thermistor 

12

N/C

6

N/C

13

Case Ground

7

PZT tuning +

14

Thermoelectric Cooler (–)


Absolute Maximum Ratings

Item

Unit

Min

Typ

Max

Case Temperature

  

-40

25

70

Chip Temperature

+10

25

40

Operating Current

mA

0

250

300

Forward Voltage

V

0.8

1.2

1.8

TEC Current

A

-

1.2

1.4

Reverse VoltageLD

V

-

-

1.8

Application

● Laser interference experiment

● Drop-side of DWDM long-haul transport equipment

● Optical Test and Instrumentation

● Microwave Photonics

● CATV networks

● Sensors

Ordering Info

PL-NL-□□□□-☆-A8▽-XX-☆

□□□□: Wavelength

0633: 633nm

0785: 785nm

1550: 1550nm

1555: 1555nm

*****

1560: 1560nm

☆: Output Power

A: 10mW

B: 30mW

▽: Linewidth

1: <10MHz

XX: Fiber and Connector Type

SA=SM780+ FC/APC

SP=SM780+ FC/PC

PP=PM780 Fiber+ FC/PC

PA=PM780 Fiber+ FC/APC

No PZT: Leave it Blank

PZT: Version please use PZT to replace



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