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DATA SHEET

DCOM OLT Transceiver

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DCOM OLT Transceiver product image
Updated: September 23, 2026

The Data Center Out-of-Band Management OLT Transceiver (DCOM OLT) is the network-facing component of a PON-based solution purpose-built for DCOM deployment.

The DCOM OLT is a hot-swappable SFP+ optical transceiver featuring an integrated 10G Ethernet-to-10G PON OLT MAC bridge. Optimized for data center PON deployments with reach requirements under 5 km, it enables seamless PON implementation while fully adhering to carrier-grade standards—all in a compact, power-efficient form factor designed to minimize space and energy consumption.

Easily installed into an 8112 Coherent Aggregation Router or third-party switch or router with SFP+ sockets, the DCOM OLT delivers point-to-multi-point, high-speed connectivity. It supports in-node options alongside other data center capabilities and connects directly to XGS-PON ONUs.

When paired with an 8112 running Ciena’s Service-Aware Operating System (SAOS), or a third-party router or switch running another operating system, the DCOM OLT supports flexible deployment. An embedded DCOM controller, available as an open, containerized function, further simplifies cross-platform integration. Node Essentials, a web-based UI residing on the 8112, further streamlines commissioning, unifies monitoring, and simplifies ongoing management.

Features and benefits

  • Hot-swappable, SFP+ 10G optical transceiver with embedded universal Ethernet-to-PON MAC bridge
  • ITU-T G.9807.1 compatible
  • Advanced Encryption Standard (AES)-128 bidirectional encryption
  • Physical layer optimized for short-reach and data center applications
  • 1577 nm cooled DML laser
  • 1270 nm APD/TIA burst receiver
  • Deployable at operating temperatures from 20°C to 70°C (case temperature)
  • Supports up to 500 Alloc-IDs and jumbo frames up to 9 Kb/s
  • In-band management through Ethernet link operations, administration, and maintenance (OAM) (IEEE 802.3 Clause 57)
  • Integrated digital diagnostics and monitoring (SFF-8472) and burst received signal strength indicator (RSSI)
  • Single fiber SC/UPC receptacle
  • Industry-unique modularity and scalability
  • Support for an open, containerized architecture compatible with Ciena’s SAOS and other operating systems

Product overview

A compact, high-performance optical access transceiver, the DCOM OLT is purpose-built for carrier-grade, fiber-based PON deployments in data center management environments. Its hot-swappable, SFP+ form factor integrates a 10G Ethernet-to-10G PON OLT MAC bridge, delivering space- and power-efficient point-to-multi-point connectivity to XGS-PON ONUs. Deployable in the high-scale 8112 router and compatible third-party platforms, the DCOM OLT simplifies deployment and management through flexible integration, unified monitoring, and streamlined operations.

8112 and third-party router with DCOM OLT transceivers
Figure 1. 8112 and third-party router

Applications

With the expanded choice and flexibility enabled by the DCOM OLT, data center operators can deploy high-performance, scalable out-of-band (OOB) management networks using a modern fiber-based PON architecture. By replacing legacy copper-based designs, the DCOM OLT enables OOB traffic to run directly over a point-to-multi-point optical infrastructure. This design eliminates the need for console servers and complex aggregation layers while reducing cabling, power consumption, and operational complexity. The result is a simpler, more scalable data center architecture that accelerates service deployment, improves operational efficiency, and provides a future-ready foundation for growth, including for the following use cases:

  • Hyperscaler data centers: Enable scalable, low-complexity OOB management for global cloud and digital infrastructure environments while reducing cabling, power, and operational overhead
  • Neoscaler data centers: Support the rapid growth of AI, cloud, edge, and colocation infrastructures with a flexible, high-density optical OOB management architecture designed for fast deployment and scale
  • Enterprise data centers: Simplify and modernize OOB management across distributed data center environments with a secure, efficient, and scalable optical networking solution

Technical specifications

Absolute maximum ratings

Parameter Symbol Min Max Unit Notes
Storage temperature TS -40 85 °C -
Operating case temperature TC 20 70 °C Note 1
Relative humidity: storage RHS 0 95 % Noncondensing
Relative humidity: operating RHO 5 80 % Noncondensing
Supply voltage VCC -0.3 4.0 V Note 2
Low speed input voltage - -0.3 VCC+0.5 V LVTTL
High speed differential input voltage - - 2.0 V p-p -
Optical receiver average power damage threshold PD - -6.0 dBm -

Notes:

  1. When ambient temperature is above 40°C, airflow at a rate higher than 1 m/s is required.
  2. The module supply voltages VccT and VccR (Vcc) must not differ by more than 0.1 V or damage to the device may occur.

Transmitter optical characteristics

Parameter Symbol Min Typ Max Unit Condition
Laser type - CW cooled directly modulated laser (DML) DFB - -
Maximum reach - <= 5 km Vcc, Tc
Nominal line rate BWTX - 9.95328 - Gb/s Vcc, Tc, XGS mode
Operating wavelength λc 1575 1577 1580 nm Vcc, Tc
Spectral width Δλc - - 1 nm
Average launch power Po 3.0 - 6.0 dBm
Transmitter tolerance to reflected optical power Tt -15 - - dB
Side mode suppression ratio SMSR 30 - - dB

Receiver optical characteristics

Parameter Symbol Min Typ Max Unit Condition
Receiver type - Burst mode avalanche pin diode (APD) / transimpedance amplifier (TIA) - -
Nominal line rate BWRX 9.95328 Gb/s VCC, TC, XGS mode
Operating wavelength λc 1260 1270 1280 nm VCC, TC
Damage threshold PD -5 - - dBm
Overload level PSEN - - -28 dBm VCC, TC, (9.95328 to 10.3125 Gb/s, λc= 1270 nm, non-return-to-zero (NRZ), extinction ratio (ER) = 6 dB, bit error rate (BER) < 10-3,
Pseudorandom binary sequence (PRBS) 231-1
Consecutive identical digit immunity CID 72 - - Bits VCC, TC
Receiver reflectance Rλc - - -12 dB @1260 to 1280 nm

Pin assignment

Contact Symbol Function Typ Notes
1 VeeT Transmitter signal ground—merged internally with VeeR GND 1
2 TX_FAULT Transmitter fault—high indicates a fault condition LVTTL-O 2
3 TX_DIS Transmitter disable—high or open disables the transmitter LVTTL-I -
4 SDA Two-wire serial interface data line LVTTL-I/O 3
5 SCL Two-wire serial interface clock line LVTTL-I 3
6 MOD_ABS Module absent (output), pulled down to Veet/VeeR in the module with 330 Ω resistor - 4
7 TOD Time of day signal—optional (RS0 not used) LVTTL-I -
8 RX_LOS Receiver loss of signal indication LVTTL-O 2
9 1PPS 1pps signal—optional (RS1 not used) LVTTL-I -
10 VeeR Receiver signal ground—merged internally with VeeT GND 1
11 VeeR Receiver signal ground—merged internally with VeeT GND 1
12 RD- Receiver data out inverted—AC coupled internally CML-O -
13 RD+ Receiver data out—AC coupled internally CML-O -
14 VeeR Receiver signal ground—merged internally with VeeT GND 1
15 VccR Receiver power + 3.3 V—merged internally with VccT (Vcc) PWR 5
16 VccT Transmitter power + 3.3 V—merged internally with VccR (Vcc) PWR 5
17 VeeT Transmitter signal ground—merged internally with VeeR GND 1
18 TD+ Transmitter data in—AC coupled internally CML-I -
19 TD- Transmitter data in inverted—AC coupled internally CML-I -
20 VeeT Transmitter signal ground—merged internally with VeeR GND 1

Notes:

  1. The module signal grounds are isolated from the module case.
  2. This is an open-collector output that on the host board requires a 4.7 k ohm (Ω) to 10 k Ω pullup resistor to VccHost.
  3. Two-wire serial clock and data lines require external pullup resistors dependent on the capacitance load.
  4. Internally pulled down with 330 Ω resistor. Requires a 4.7 k Ω to 10 k Ω pullup resistor to VccHost.
  5. VccT and VccR are merged internally (Vcc). The module supply voltages VccT and VccR must not differ by more than 0.1 V or damage to the device may occur.

Regulatory compliance

Parameter Standard Performance
Reliability report GR-468 Issue 2
GR-326
GR-63
MIL-STD-202G		 Compatible with standards
Electrostatic discharge (ESD) GR-468 Issue 2, 2.4.4
MIL-STD-883K
Method 3015 Tier 1 Qual		 HBM 500V
Electromagnetic interference immunity (EMI) FCC Part 15B; -003
AS / NZS CISPR32
CISPR / EN55032 Class B
IEC61000-4-3
VCCI		 Compatible with standards
Laser eye safety FDA CDRH21-CFR 1040
EN60825-1 / A11		 Compatible with Class 1 laser product
Electrical safety UL certified Compatible with standards
Comprehensive safety CSA Compatible with standards
RoHS/REACH RoHS 6 Compatible with standards

Recommended operating conditions

Parameter Symbol Min Typ Max Unit Notes
Case operating temperature TC 20 - 70 °C 1 and 2
Module supply voltage Vcc 3.135 3.3 3.46 V 3 and 4
Host supply voltage VccHost 3.14 - 3.465 V 4
TX_FAULT, RX_LOS VOH 2.4 - - V
VOL -0.3 - - V
TX_DIS, 1PPS, TOD VIH 2.0 - VCC+0.3 V -
VIL -0.3 - V

Notes:

  1. When ambient temperature is above 40°C, airflow at a rate higher than 1 m/s is required.
  2. See Figure 2 for the module Tc reference point.
  3. VccT and VccR are internally merged (Vcc). The module supply voltages VccT and VccR must not differ by more than 0.1 V or damage to the device may occur.
  4. In present implementation, module is not waiting for either power level 2/3 select bits to be set or indicates its power state through the power level 2/3 operation state bits.

Dimensions

Parameter Standard Units
Weight 36/0.08 gm / lb.
Depth 76.55 / 3.014 mm / in.
Height 10.6 / 0.417 mm / in.
Width 13.95 / 0.549 mm / in.
Mechanical dimensions and reference points for the DCOM OLT transceiver
Figure 2. Mechanical specifications

Low-speed electrical characteristics

Parameter Symbol Min Typ Max Unit Notes
Module supply current ICC - 670 850 mA 1
Module power consumption PDISS - 2.2 2.8 W 1
TX_FAULT, RX_LOS VOH 2.4 - - V -
VOL -0.3 - - V
TX_DIS, 1PPS, TOD VIH 2.0 - VCC+0.3 V -
VIL -0.3 - V

Notes:

  1. Supply current includes both VccT and VccR connections.
  2. VccT and VccR are merged internally (Vcc). The module supply voltages VccT and VccR must not differ by more than 0.1 V or damage to the device may occur.

High-speed electrical characteristics

Parameter Symbol Min Typ Max Unit Notes
Tx input differential amplitude (TD+/2) VI 190 - 700 mV p-p diff 1
Tx input AC common mode voltage tolerance - - - 15 mV (RMS)
Tx input differential impedance ZIN 80 90 100 Ω 1
Tx input termination mismatch ΔZIN - - 5 % @ 1MHz
Tx input total jitter TJIN - - 0.28 UI p-p
Tx input data dependent jitter DDJ - - 0.1 UI p-p
Tx input uncorrelated jitter UJ - - 0.023 UI p-p (RMS)
Rx output differential voltage (RD+/-) VO 300 - 850 mV p-p diff 2
Rx output AC common mode voltage - - - 7.5 mV (RMS)
Rx output differential output impedance ZOUT 90 100 110 Ω 2
Rx output termination mismatch ΔZOUT - - 5 %
Rx output rise and fall time TR 28 - - ps 20% to 80%
Rx output total jitter TJOUT - - 0.70 UI p-p
Rx output 99% jitter J2OUT - - 0.42 UI p-p

Notes:

  1. Internally AC coupled and terminated (90 Ω differential).
  2. Internally AC coupled.

Ordering information

Part number Description
XCVR-DCM001 DCOM CERTIFIED XGSPON MICROPLUG OLT, 5KM MAX DISTANCE, 128 SPLIT

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