The QSP-100COTU is a high-performance 100G QSFP28 Digital Coherent Optics (DCO) DWDM transceiver designed for data center interconnect, metro DWDM, long-haul and backhaul optical networks.

It supports 100GE / OTU4 client interfaces, full C-Band tunable operation based on the ITU-T G.694.1 grid, and coherent modulation for high-capacity transmission over OS2 single-mode fiber.

CLIENT INTERFACE

100GE / OTU4

LINE RATE

Up to 128G

WAVELENGTH

C-Band

Fully Tunable

DISTANCE

Up to 120KM

Unamplified

Key Features

✓ QSFP28 Digital Coherent Optics

✓ Full C-Band Tunable Wavelength

✓ 100GE / OTU4 Support

✓ DP-QPSK / DQPSK Modulation

✓ Duplex LC Optical Interface

✓ OS2 Single-Mode Fiber

✓ Up to 120KM Transmission

✓ Hot-Pluggable QSFP28 Form Factor

General Specifications

Parameter	Specification
Model	QSP-100COTU
Product Type	100G QSFP28 DCO Coherent Transceiver
Form Factor	QSFP28 Digital Coherent Optics
Applications	DCI, Metro DWDM, Long-Haul, Backhaul Networks
Connector	Duplex LC
Fiber Type	OS2 Single-Mode Fiber
Line Rate	Up to 128 Gb/s
Client Interface	100GE / OTU4
Modulation	DP-QPSK / DQPSK
Wavelength	Full C-Band Tunable – ITU-T G.694.1
Transmission Distance	Up to 120 km Unamplified
Power Supply	+3.3 V
Power Consumption	13 W (ST) / 15 W (IT)
Operating Temperature	ST: −5°C to +70°C / IT: −40°C to +85°C
Housing	Metal Enclosure – Low EMI
Hot Plug	Supported
Compliance	RoHS-6
Laser Safety	Class I – FDA/CDRH, IEC 60825

Transmitter Optical Specifications

Parameter	Min.	Max.	Unit
Output Power	-8	-5	dBm
SMSR	40	—	dB
Tx Power Accuracy	-2	+2	dB
Tx Power Imbalance	—	2	dB
Tx XY Skew	—	3	ps
Tx IQ Imbalance	—	1	dB
Tx Quadrature Error	-5	+5	°
Tx IQ Skew	—	2	ps
EVM Mask Ratio	—	18	%
In-Band OSNR	40	—	dB/0.1nm
Tx Reflectance	—	-22	dB

Receiver Optical Specifications

Parameter	Min.	Max.	Unit
Input Power Range	-20	+5	dBm
Sensitivity	—	-32	dBm
Chromatic Dispersion	—	10	ns/nm
PMD Tolerance	—	16	ps
PDL Penalty	—	1	dB
SOP Tracking	—	100	kHz
Rx Reflectance	—	-22	dB
LOS Assert	-40	—	dBm
LOS De-Assert	—	-32	dBm
LOS Hysteresis	—	5	dB
OSNR – Metro	16.5	—	dB/0.1nm
OSNR – Long-Haul	15	—	dB/0.1nm

Applications

100G Data Center Interconnect

Metro DWDM Networks

Long-Haul Networks

ISP Backbone

100GE Transport

OTU4 Transport

Cloud Infrastructure

Backhaul Networks

Coherent DWDM Deployment

This is a tunable coherent DWDM transceiver. Host equipment compatibility, supported operating mode, ITU channel configuration, optical power budget and overall DWDM link design should be confirmed before deployment.