Conoptics_Modulator_and_Drive_Electronics_Product

上海昊量光电设备有限公司

产品名称：电光调制器系统

所属类别：电光调制器

厂家名称：美国ConOptics公司

美国 ConOptics公司提供一系列的低压电光调制器、驱动器以及其它附件，以满足您的不同需求。电光调制器和调制系统用于脉冲选择、再生开关、光盘控制和数据存储。ConOptics公司提供的电光调制器都是横向电光调制器。其采用的晶体有三种类型：ADP、KD*P、LTA。电光调制器和放大器的详细参数如表1、表2所示。如需任何进一步信息，请联系上海昊量光电设备有限公司联系！

上海昊量光电设备有限公司

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Website:

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E-Mail: info@ Website:

Toll Free: 800 748 3349

Electro-Optic Components and Systems

上昊海量

Choose from our line of modulators and driver electronics

Conoptics manufactures an extensive line of low voltage electro-optic light modulators, driver

electronics and associated components to satisfy your diverse requirements. Your application

will dictate which version of modulator and driver electronics you need and what auxiliary

components you should use. The technical tables listed here provide detailed information to

assist in your decision making process.

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ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

Contact: sales@, Website:

Drive Electronics

In general, the first application requirements considered in the choice of modulation system components are the

information bandwidth and waveform requirement. The driver output voltage achievable is a function of amplifier

bandwidth and, while this system parameter is not isolated from others, such as aperture diameter, operating

wavelength, etc., it is normally the limiting parameter of the system.

Optical Modulators

All modulators listed in this data sheet are of the transverse field type, that is, the electric field produced by the

applied signal voltage is perpendicular to the optical propagation direction. The voltage swing required by a given

modulator at a given operating wavelength to transit between the full off state to the full on state is called the Half

Wave Voltage (V½). The transverse field structure allows reduction of V½ by manipulation of the crystal length to

aperture ratio to a level achievable by available driver electronics. V½ is roughly proportional to wavelength and

long wavelength devices usually require higher length to aperture ratios to accommodate existing driver output

levels. Conoptics offers modulators constructed with three different crystal species: Ammonium Dihydrogen

Phosphate (ADP), Potassium Dideuterium Phosphate (KD*P), and Lithium Tantalate (LTA). Models 370, 380, and

390 utilize ADP as the active element. The unique feature of these models is the virtual non-existence of

piezoelectric resonances. Models belonging to the 360 series utilize LTA. LTA has the lowest intrinsic V½ and the

longest wavelength IR cutoff. Furthermore, it has a combination of high refractive index and relatively low

dielectric constant which allows modulators to be designed which make full use of the intrinsic driver frequency

response. Models in the 360 series exhibit piezoelectric resonances but they are discrete and very narrow. KD*P is

used in Model 350 series modulators. In terms of optical transmission bandwidth and driver frequency response

utilization, this series falls in between ADP and LTA versions. Table 1 below provides the specifications our ADP

(240-to-800nm), KD*P (240-to-1100nm) and LTA (700-2000nm) series modulator product line.

上

昊海Model

Number

184

263

92

115

M390

M350-50 455

261

360

226

130

113

--

--

--

--

M350-160

M350-210

M360-160

量光

Table 1 Modulator Specifications:

电V ½ wave

@1064nm

--

--

--

--

设 V ½ wave

@ 500nm

V ½ wave

@ 830nm

--

--

--

--

V ½ wave

@2500nm

--

--

--

--

Aperture

Diameter

2.5mm

3.5mm

2.5mm

3.5mm

Resonances

No

No

No

No

Contrast Ration @

633nm and 1064nm

500:1,N/A

500:1, N/A

500:1, N/A

500:1, N/A

Length w/

Polarizer

158mm

158mm

253mm

272mm

M370

ADP Crystal Series

M370 LA

Wavelength Limits

(240 to 800nm)*

M380

备有

757

433

600

376

216

188

312

143

107

71

970

522

720

472

275

240

400

183

138

92

--

--

--

--

--

--

950

430

323

215

3.1mm

2.7mm

3.5mm

3.1mm

2.7mm

3.1mm

2.7mm

2.7mm

2.7mm

2.7mm

Yes

**

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

限500:1, 700:1

500:1, 700:1

106mm

137mm

137mm

162mm

215mm

268mm

95mm

137mm

174mm

215mm

M350-80

KD*P Crystal

M350-Series

80LA

Wavelength Limits

(240 to 1100nm)*

M350-105

公500:1, 700:1

300:1, 500:1

300:1, 500:1

N/A, 200:1

N/A, 100:1

N/A, 100:1

N/A, 100:1

司

M360-40

LTA Crystal Series

M360-80

Wavelength Limits

(700 to 2000nm)

M360-120

ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

Contact: sales@, Website:

Special Notes









Special Order wavelengths below 400nm are available, please contact sales@

Special Clamped version available to minimize Piezo-electric resonances

To determine the ½ wave voltage at your operating wavelength, compute the voltage listed and multiply

it by the ratio of the wavelengths. (i.e. M350-50 @ 700nm = 455 x 700 / 500 = 637 Volts)

The last digits of the Model Number for the 350 and 360 Series designate the total crystal path length in

millimeters.

Modulator Modifications

Any of the modulators listed here can be used as a phase modulator by simply rotating the input polarization

direction by 45°. This procedure makes one of the modulator half segments essentially inactive and doubles V½

(now the voltage required for a 180° phase shift). A factory modification can be made during construction which

restores V½ to its original value. This modification precludes use of the device as an intensity modulator, however,

and is irreversible.

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ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

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Amplifier Specifications

Table 2 listed below provides the basic specifications of our line of amplifiers and the interface configuration to the

modulators. All of our amplifiers include a DC Bias Supply with greater than +/- 250 volts for setting the

modulators operating point. The lump capacitance amplifiers have (2) BNC cables driving the modulator push-pull.

The 50 ohms S.E. configuration has (2) SMA connectors for driving a 50 ohm single ended modulator and a third

connector (BNC) for DC Bias. The 100 ohm and 50 ohm balanced line configuration has (2) twinax connectors for

driving a balanced line modulator and a third miniature twinax connector for the DC Bias.

Table 2 Amplifier Details

上Model

25A

25D

50

100

200

275

302RM

302A

307

505

550

Bandwidth

DC TO 25MHz

DC TO 30MHz

DC TO 50MHz

Rise/Fall Times

14ns

8ns

7ns

3.5ns

-

50ns

Max. Output V

145

175

90

90

170

275

750

350

800

44

140

Typical Drive Configuration

100 Ohms B.L.

100 Ohm's B.L.

50 Ohms B.L.

50 Ohms B.L.

50 Ohms S.E.

Lumped Capacitance

Lumped Capacitance

Lumped Capacitance

Lumped Capacitance

50 Ohms S.E.

50 Ohms S.E.

Output

Analog

Digital

Analog

Analog

-

Analog

Analog

Analog

Digital

-

-

昊海DC TO 100MHz

10KHz TO 200MHz

DC TO 8MHz

DC TO 250KHz

DC TO 1MHz

DC TO 50KHz

20 TO 100MHz

50 TO 500MHz

量

1micro sec

350ns

8ns

-

-

光电

设备有限公司

ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

Contact: sales@, Website:

Modulation Systems

The modulators and drivers listed in this data sheet can be used in various combinations to form high

performance, cost effective modulation systems. Table 3 shows the key performance characteristics of various

combinations of standard driver electronics and modulators. The high frequency -3dB points may be limited either

by the driver or the modulator. Rise and fall times are normally calculated as 0.35 divided by the -3dB bandwidth

but, due to the compression caused by the sine squared transfer characteristic over its full on to off range, the

optical rise and fall times of these systems is approximately 20% less.

Table 3 Modulation Systems:

Amplifier

302RM

302RM

302RM

302A

307

505

550

25A

25A

25D

25D

50

50

100

100

200

200

200

275

275

Modulator

350-80LA

350-50

350-80

Bandwidth

DC to 250KHz

DC to 250KHz

DC to 250KHz

DC to 1MHz

DC to 50KHz

20MHz to 100MHz

50 to 250MHz

DC to 25MHz

DC to 25MHz

DC to 30MHz

DC to 30MHz

DC to 50MHz

DC to 50MHz

Transmission at Longest wavelength

85% @ 1040nm

85% @ 830nm

85% @ 1200nm

85% @ 830nm

85% @ 900nm

Phase Modulation

85% @ 830nm

85% @ 600nm

85% @ 830nm

85% @ 700nm

85% @ 1064nm

85% @ 500nm

85% @ 830nm

85% @ 500nm

85% @ 830nm

85% @ 350nm

85% @ 600nm

85% @ 830nm

85% @ 650nm

85% @ 1064nm

上

昊海350-105

350-50

360-80

360-80

量350-160

350-80

350-160

360-80

380-2P

360-120

380-2P

360-120

350-80

350-160

360-80

350-105

350-160

光电设DC to 100MHz

DC to 100MHz

10KHz to 200MHz

10KHz to 100MHz

10KHz to 200MHz

DC to 8MHz

DC to 8MHz

备有限公

司

ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

Contact: sales@, Website:

Dispersion Data:

Model 360-80

Calculates index dispersion and/or pulse elongation for several materials.

LTA average

A = 4.52118266929

B = .5

C = .7

D = 27.2917136782

E = 1156.32081918

Form is n^2=A+B/(L^2-C)+D*L^2/(L^2-E)

上

Lambda n dn/dL d2n/dL2

+.62742

+.45775

+.34153

+.25956

+.20031

+.15656

+.12365

+.09848

+.07895

d3n/dL3

-4.11610

-2.77728

-1.93363

-1.38243

-1.01109

-.75424

-.57246

-.44119

-.34470

d4n/dL4

+34.23492

+21.14312

+13.58106

+9.01732

+6.15902

+4.31100

+3.08275

+2.24645

+1.66473

昊海.7000

.7500

.8000

.8500

.9000

.9500

1.0000

1.0500

1.1000

Lambda

.7000

.7500

.8000

.8500

.9000

.9500

1.0000

1.0500

1.1000

2.16752 -.14286

2.16109 -.11601

2.15581 -.09620

2.15139 -.08129

2.14762 -.06987

2.14436 -.06100

2.14149 -.05403

2.13893 -.04851

量0.1%

82

69

58

50

43

38

33

29

25

2.13662 -.04409

光0.2%

164

137

117

100

87

75

66

58

51

电设

PULSE ELONGATION IN FEMTOSECONDS vs WAVELENGTH FOR A 80mm LENGTH

Delta Lambda/Lambda

备657

550

467

401

347

302

264

232

204

0.4%

328

275

233

200

173

151

132

116

102

0.8% 1.6%

1321

1106

939

805

697

607

531

466

410

3.2%

2695

2256

1914

1641

1420

1236

1082

950

836

有限公司



Bandwidth Calculation notes

%Bandwidth = wavelength in microns / pulse width in fsec

ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

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Model 350-160

Calculates index dispersion and/or pulse elongation for several materials.

KD*Pe

A = 2.

B = .93

C = .91

D = 2.28110628422E+12

E = 3.78851499211E+14

Form is n^2=A+B/(L^2-C)+D*L^2/(L^2-E)

上

Lambda n

1.46316

1.46219

1.46136

1.46063

1.45999

1.45940

1.45887

1.45837

1.45790

dn/dL

-.02115

-.01789

-.01545

-.01362

-.01221

-.01114

-.01031

-.00967

-.00917

d2n/dL2

+.07564

+.05602

+.04209

+.03198

+.02449

+.01885

+.01454

+.01119

+.00856

d3n/dL3

-.46711

-.32773

-.23552

-.17284

-.12919

-.09815

-.07566

-.05910

-.04671

d4n/dL4

+3.43939

+2.24331

+1.50647

+1.03763

+.73079

+.52493

+.38375

+.28500

+.21470

.7000

.7500

.8000

.8500

.9000

.9500

1.0000

1.0500

1.1000

PULSE ELONGATION IN FEMTOSECONDS vs WAVELENGTH FOR A 160mm LENGTH

Lambda

.7000

.7500

.8000

.8500

.9000

.9500

1.0000

1.0500

1.1000

0.1%

20

17

14

12

11

9

8

7

6

0.2%

40

34

29

25

21

18

16

13

11

Delta Lambda/Lambda

0.4%

79

67

57

49

42

36

31

26

22

0.8%

158

135

115

99

85

73

62

53

44

1.6%

318

270

231

198

170

146

125

106

89

3.2%

647

550

471

404

347

298

255

217

182

昊海

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ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

Contact: sales@, Website:

M25D driving 350-160 detected @ 514nm

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ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

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PHASE MODULATORS

The standard modulators 350, 360, 370, 380 and 390 series are built as intensity modulators with a polarizer

aligned to the crystal axis. The same modulators can also be configured for use as polarization rotators, voltage

variable wave plates or phase modulators. However, when used as phase modulator only half the cell is active, so

the half wave voltage is twice as high as compared to the standard use.

All of our modulators can be constructed with all the crystals inline such that the full cell is active as a phase

modulator, but in this configuration it cannot be used as an intensity modulator, polarization rotator or variable

wave plate. Once the modulator is built as a phase modulator it cannot be re-configured as an intensity

modulator.

上

昊海KD*P Series

350-50LA

350-50

350-80

350-105

350-160

350-210

ADP Series

370LA

370

380

390

LTA Series

360-40

360-80

360-120

360-160

Phase Sensitivity mrad/volt @ 500nm

3.85

7

12

14.7

24

29

Phase Sensitivity mrad/volt @ 500nm

12

17

34

27

Phase Sensitivity mrad/volt @ 830nm

13

26

39

52

V for ½ Wave Phase Modulator

815

450

261

225

130

113

V for ½ Wave Phase Modulator

262

184

90

115

V for ½ Wave Phase Modulator

242

120

80

60

量光电设

PHASE MODULATOR ALIGNMENT

Linearly polarized light must be passed through the modulator so that that the plane of polarization

is orthogonal* to the applied field (see figure 1)

备有限公司* For 350/370/380/390 Series

For 360 Series “plane of polarization is parallel”

To perform the alignment of the phase modulator, the optical setup must contain a polarized laser

(or an input polarizer (P1) if the laser is unpolarized) and an output polarizer (P2) positioned so that

ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

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its pass direction is orthogonal to the input (see figure 2)

Align the phase modulator (with the connector vertical or parallel to the input polarization ) so that

the laser beam is centered on the input and the exit crystal faces. Rotate the modulator until a null is

observed, after P2. This will align the input polarization parallel to the induced index change. Then

remove P2

A suitable modulator support must be provided so that adjustments of the modulator can be made

in roll, pitch and yaw. (see figure 3)

上

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ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

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RESONANT CIRCUIT E.O. INSTALLATION DIAGRAM

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( Click for larger view. » )

电

MODULATOR MOUNTING ASSEMBLY

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ConOptics, Inc. 19 Eagle Road, Danbury, CT 06810 Phone 800-748-3349 Fax 203-790-6145

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Key features:

Height Adjustment Range: 2.6 inches (6.6cm)

Lowest Center Line

Highest Center Line

Height without Mounting Rings: Fully Retracted Height

Fully Extended Height

4.15”, 10.5cm

6.75”, 17.2cm

2.30”, 5.8cm

4.90”, 12.4cm

3.33lbs.

3.90”, 9.9cm

6.50”, 16.5cm

3.95lbs.

10”L x 3.6”W x 2.3”H

25.4cm x9.1cm x 5.8cm

Fully Extended w/o Rings 10”L x 3.6”W x4.9”H

25.4cm x9.1cm x12.4cm

10”L x 3.6”W x 6.3”H

25.4cm x9.1cm x 16cm

10”L x 3.6”W x 8.9”H

25.4cm x9.1cm x 22.6cm

Aperture 2mm

Height with Mounting Rings: (Center of Ring)

Dimensions: (Overall L x W x H)

Alignment Tool Option:

上Weight

Fully Retracted Height

Fully Extended Height

Weight

Fully Retracted w/o Rings

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光Fully Retracted with Rings

Fully Extended with Rings

Diameter is 5cm

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