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Home > Products > Integrated High-Speed Receivers > 40Gb/s Integrated Coherent Receivers
40Gb/s Coherent Receiver  
 
Optoplex 40Gbps Coherent Reveiver
Optoplex 40Gbps Coherent Reveiver
     
40Gb/s Coherent Receiver PDF Datasheet
 
  • Description
  • Features
  • Applications
  • Specification
Product Description - 40Gb/s Coherent Receiver

The integrated 40-Gb/s DP-QPSK receiver incorporates two 90° optical hybrids with four pairs of balanced photodetector (PD) and four linear TIAs into a single butterfly package. Unlike other technologies in which the polarization beam splitter (PBS) and/or the power splitter (BS) are not included, Optoplex’s receiver includes both of them with the optical hybrids, PDs and the TIAs to offer a fully integrated solution which will benefit users in terms of completely removing fiber routing and the skew management. The integrated receivers work at the symbol rate up to 12.8GBaud/s. 

The mechanical footprint, electrical interfaces and DC Pin assignments in Optoplex’s integrated 40-Gb/s DP-QPSK Coherent Receiver is compatible with those in OIF’s Implementation Agreement (IA) for Integrated Intradyne Coherent Receivers (OIF2009.033.05) for the 100-Gb/s Coherent Receiver. The mechanical dimension is 50 ´ 27 ´ 7.5 mm. The high-speed electrical interfaces (RF Outputs) uses co-planar waveguides (CPW) as proposed in OIF’s IA. The low-speed electrical interface (DC Control Pins) uses 40 pins and the same arrangement as specified in OIF2009.033.05 IA.

 

 

Features and Benefits of 40Gb/s Coherent Receiver
  • Fully compliant with OIF requirements
  • Built-in PBS and BS
  • Small skew
  • Low phase error
  • High CMRR
Applications
  • Optical coherent detection
  • DP-QPSK demodulation
  • 40-Gb/s transmission (preferred choice of modulation format)
40Gb/s Coherent Receiver Product Datasheet

 

Standard Specifications of Coherent Receiver

Parameter

Unit

Specification1

Wavelength Range (C-band) nm 1520 -1570
Free Spectral Range (typical)2 GHz 21.5, 25, 33.3, 43, 50, 57, 65, 66.7
Temperature Dependent Frequency Shift GHz < 10
Extinction Ratio dB > 16
Skew ps < 1.0
Phase Tuning Range FSR > 1.5
Polarization Dependent Phase Shift deg < 5
Differential Conversion Gain V/W > 1500
Differential Output Eye Amplitude mVpp 550
DC Responsivity  @ Optimum DLI Phase A/W > 0.2
Optical Input Power dBm -6 to +8
Polarization Dependent Loss dB < 0.6
Optical Return Loss dB > 27
Bit Rate (NRZ-DPSK) Gbps 43
O-E Bandwidth (S21 3dB Cut-off Frequency) GHz > 28
Photodiode Dark Current (per PD) nA  < 100
Electrical Return Loss (S22) dB -10 (DC-20GHz)
-4 (20-45GHz)
Amplifier Supply Voltage V -5.2
Power Consumption W < 1.5
Phase Tuning Speed s < 1
OSNR Performance dB 20
Package Dimensions (excluding collimator sleeves and electrical pins) mm 50 x 30 x 7.5

Notes:

  1. Over the stated spectral and operating temperature ranges and all polarization states.
  2. Other FSR available upon request.
Typical Performance of 40G Coherent Receiver

Parameter Definition of DPSK Demodulator

Parameter Definition

Example

Wavelength Range is defined as spectral range over which the DPSK demodulator can operate.

1528.77 ~ 1563.86 nm

DPSK is acronym for Differential Phase-Shift Keying

-

DLI is acronym for Delay Line Interferometer.

-

DQPSK is acronym for Differential Quaternary Phase-Shift Keying

-

DPSK Demodulator is a component that converts phase modulation into amplitude modulation.

-

Insertion Loss (dB) is the relative peak power level transmitted to the output ports referenced to the 0-dB reference level when the DPSK demodulator is inserted. "On" and "Off" ports are reported separately.

1.7 dB

Insertion Loss Uniformity (dB) is defined as maximum insertion loss difference between the adjacent channels of the two output ports across the whole operating wavelength range.

0.5 dB

Isolation/Extinction Ratio (dB) is defined as the power difference between peak and valley of the spectrum. "On" and "Off" ports are reported separately.

18 dB

Polarization Dependent Loss (PDL) (dB) is the power difference between the two extreme polarization states. "On" and "Off" ports are reported separately.

0.2 dB

Polarization Dependent Frequency Shift (PDFS) (deg) is the maximum frequency difference measured at the valley of power spectrum among all polarization states.

3 deg

Optical Return Loss (dB) is the ratio between the input power and the reflected power over all polarization states at each port , RL = -10×log10(Pr/Pin).

40 dB

Tuning Range (TR) (GHz) is the maximum shift variation of a center frequency of the spectrum driven by applying control voltage to DPSK demodulator.

1.5×FSR

Tuning Speed (TS) (second) is the time needed by the device to tune the frequency to its half of target position.

1 s

Operating Temperature (°C) is the ambient temperature range over which the device's performance spec can be met.

-5 to 65 °C

Storage Temperature (°C) is the ambient temperature range over which the device can be stored without affecting its intended application afterwards.

-40 to 85 °C

Product Request and Ordering Information
Please speak to Optoplex Sales persons. If you request custom-designed DPSK Rx product, please provide the following parameters:
  • Wavelength range
  • Fiber length
  • Optical connector type