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20/40 GHz Intensity Modulators (AM20, AM40)

The 20/40 GHz Intensity Modulators (AM20, AM40) features integrated photodiode.
  • Product Detail

AFR high bandwidth Zero-Chirp modulators are based on the Mach-Zehnder Interferometer (MZI) architecture. The AM20 & AM40 broadband analog intensity modulators combine high linearity with low driving voltage and small footprint, covering all the frequency range from 20 GHz to beyond 40 GHz (AM20: 20-30 GHz; AM40: > 30 GHz). The increasing demand to shift the transmission frequency in analog fiber optic links towards higher frequency finds in AFR analog modulators the most advanced and suitable answer. The experience and know-how of AFR engineers is available to customize our products to the customer’s specific requirements.


Optical and Electrical Specifications

Parameter

Conditions

Value (AM20)

Value (AM40)

Unit

Optical

Operating Wavelength

-

1525 - 1615

1525 - 1615

nm

Insertion Loss

No connectors

< 4.5 (3.5 typ)

< 5.0 (4.0 typ)

dB

With connectors

< 5.0 (4.0 typ)

< 5.5 (4.5 typ)

Optical Return Loss

No connectors

> 45

> 45

dB

Polarization Extinction ratio

-

> 20 (23 typ)

> 20 (23 typ)

dB

Electrical – RF Port

S21 Electro-Optic Bandwidth

- 3 dBe

> 20 (23 typ)

> 30 (31 typ)

GHz

S11 Electrical Return Loss

40 MHz - 20 GHz

< - 10 (- 12 typ)

< - 10 (- 12 typ)

dB

20 GHz - 35 GHz

-

< - 8 (- 10 typ)

RF Vπ Voltage

@ 1 kHz

< 5.0 (4.5 typ)

< 5.2 (4.7 typ)

V

@ 20 GHz

6

6

V

Electrical – Bias Port

Bias Vπ Voltage

@ 1 kHz

< 5.5 (5.0 typ)

< 5.5 (5.0 typ)

V

Bias Port Impedance

@ DC

1

-

Photodiode Characteristic

Monitor PD Reverse Current

-

-

2

mA

Monitor PD Forward Current

-

-

10

mA

Monitor PD Reverse Voltage

-

-

15

V

Photodiode Responsivity

-

> 1 x 10-3

> 1 x 10-3

mA/W

Linearity

-

± 10

± 10

%

 


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